10 Best Robotic Pool Cleaners for Inground Pools (September 2026)

Pool ownership is fun right up until Sunday afternoon disappears into vacuuming leaves off the deep-end floor and scrubbing the scum ring off the tile. If you have an inground pool, a robotic pool cleaner is the single biggest quality-of-life upgrade you can make, and the difference between a good one and a mediocre one shows up on your waterline within a single cycle.

We spent weeks going through the spec sheets, owner reviews and failure reports behind the ten robotic pool cleaners for inground pools below, and every claim here traces back to real product data.

The short answer: the Dolphin Nautilus CC Plus is the best overall pick for most inground pools. It is corded, cleans pools up to 40 ft in length in a roughly two-hour cycle, and carries more verified reviews than any other model in this roundup. If you refuse to own a power cord, the WYBOT C1 is the cordless value pick, and the Aiper Scuba S3 is the one to buy if the waterline ring is your main complaint.

Two quick notes before we get into the picks. First, a robot is not a skimmer replacement. Pool owners on r/swimmingpools and r/pools overwhelmingly run a two- or three-part setup, pairing a robot for floor and walls with a separate surface skimmer, and one owner in r/swimmingpools describes exactly that combination. Second, no robot handles steps, benches and tight corners perfectly, which is the most common complaint in owner threads.

If your cleaning routine is more about floors and carpets than pools, our picks for robot window cleaners and car vacuum cleaners cover the same cordless-versus-corded trade-off in a different room.

Our Top 3 Robotic Pool Cleaner Picks for 2026

These three won their slots on the combination of verified review volume and the specifics that decide whether a robot fits a real inground pool: wall climbing, filtration fineness and how the machine gets retrieved after a cycle.

Comparing 10 Corded and Cordless Pool Robots in 2026

This table spans the full range: three corded Dolphin models and seven cordless machines from WYBOT, Aiper and Beatbot. Pool coverage is the number to check first, because a robot rated below your pool’s square footage will simply park before it finishes.

1. Dolphin Nautilus CC Plus – the set-and-forget corded workhorse

This is the unit most inground pool owners end up with, and the reason is simple: you plug it in, drop it in, and push one button. There is no battery to charge and no app to configure before the machine goes in the water, which removes the single most common complaint cordless owners report.

It sold into the #1 slot in Robotic Pool Cleaners on Amazon at the time of our review, and the wall-climbing performance is what keeps it there. One r/swimmingpools owner runs it as the bottom-and-walls leg of a three-device setup, which tells you how much pool owners trust the cleaning result rather than the feature list.

At 9.45 kg it is one of the lighter machines in this roundup, which matters because you will be lifting it out of the water yourself. The 22.2 by 17.6 by 12.9 inch body is the standard Dolphin footprint, so replacement parts and caddies carry across the brand’s corded range.

Wall climbing and waterline coverage on real pools

The active scrubber brush does the work here, spinning against the pool wall while the drive wheels push the unit upward. Owners consistently report that it reaches the waterline on both vinyl liner and gunite surfaces, and the two-hour cycle is long enough to cover a typical inground pool without a mid-cycle restart.

What it does not do is clean above the waterline. The Nautilus CC Plus scrubs the tile line and stops, so any sunscreen film or calcium above that band still needs a manual brush.

Filter care and what actually gets captured

The top-load basket lifts straight out, which is the design detail that separates Dolphin from cheaper imitations. Rinse it under a hose after every cycle, especially after a sand-heavy week, and cloudy water returning within a day is almost always a filter that was rinsed a week late rather than a suction problem.

It is a screen-style basket rather than a fine-micron cartridge, so it captures leaves, twigs and coarse grit well but lets the finest dust pass. That is the right trade for most pools; if you chase water clarity rather than debris, look at the Aiper models later in this guide.

Where the corded design annoys people

The cord is the deal. It twists between cycles and there is no anti-tangle swivel on this model, so you will be laying it out straight before each run. It is also the reason a good share of owners have migrated to cordless in the first place.

2. Dolphin Escape – track traction and 4000 GPH filtration for smaller pools

The Escape is the same corded Dolphin approach as the Nautilus with a different drivetrain, and the difference is felt immediately. Where the Nautilus rolls on wheels, the Escape runs on continuous rubber tracks that grip the pool floor without scuffing a vinyl liner, and owners who upgraded from a bag-style booster pump vacuum tend to notice the debris capacity first.

Rated for pools up to 33 ft with filtration listed above 4000 GPH, it is the right size for a mid-sized inground pool. The oversized debris cartridge holds up to 60% more than bag-based competitors, which means fewer mid-cycle emptying stops during leaf season.

Why the tracks matter on uneven pool floors

Tracked drive is the difference between a robot that crosses a drain grate and one that stalls on it. Reviews of this unit specifically mention smooth passage over seams, main drains and floor slopes, and the SmartNav 2.0 scanning paired with dual 24V motors gives consistent coverage without an expensive mapping system.

The float setting is the number one setup mistake

The most repeated complaint is behavioral rather than mechanical: set the buoyancy float too high and the machine rises off the pool floor, cleaning poorly while appearing to work. It is a two-minute adjustment once you know to look for it, but it catches out first-time owners constantly.

Cord length and the 33 ft problem

Owners repeatedly flag that the cord is often too short to reach across a full 33 ft pool from a typical outlet, so plan your power supply placement before the first run. As with the Nautilus, the cord twists between cycles and needs untangling before storage.

At 14 lbs per the product copy, this is the easiest corded machine here to lift out, and the quick water release drains it before you bring it up. That is a genuine advantage over most cordless units, which we will get to.

3. WYBOT C1 – the cordless value pick for standard inground pools

The C1 is the machine most people mean when they say cordless pool robot, and it is designed specifically for inground pools rather than adapted from an above-ground design. The triple-motor system drives it up slopes of 45 degrees and across steps, and the battery carries it for up to 160 minutes over pools up to 1,618 sq ft.

One important caveat belongs at the top of this section. CNET tested more than 20 robotic cleaners and rated the WYBOT C1 as having done okay in testing while noting that other cordless robots proved to be the better value buy. Its 4.0 average here is the lowest of the ten models in this roundup, with a 12% one-star share, so treat the strong review count as volume rather than universal acclaim.

What the gyroscope navigation actually does

The C1 uses a high-precision gyroscope to follow optimized N-Path and S-Path patterns rather than random bouncing. In practice that means better lane coverage than a bounce-style robot, because the machine commits to a line instead of crossing its own path.

It is still pattern-based rather than camera or AI mapping, so on freeform or kidney-shaped pools you can find a small dead zone. The fix is a second pass, not a different machine.

Battery runtime and the charge-time trade

The 99.34 watt-hour lithium-ion pack runs up to 160 minutes, and the technical data lists a 160-minute charge time, which is a poor ratio if you plan to run two full cycles in a day. For weekend-only maintenance that is a non-issue, because the robot sits on its charger between runs.

Who should skip the C1

If your pool is larger than 1,618 sq ft, skip this one and move up the list. If fine dust and sand clarity matter more than leaf pickup, the dual-filtration models handle that better.

Owners who come from a corded Dolphin often report the same reaction seen across cordless forums: the absence of the cord outweighs the slightly less thorough scrub. For a first cordless purchase, the C1 remains the reference point because the brand and app ecosystem are established and parts are easy to find.

4. Dolphin Advantage – a corded all-rounder with a 4.4 average

Where the Nautilus CC Plus wins on review volume, the Advantage wins on average rating at 4.4 stars with a 73% five-star share. It is a corded Dolphin for pools up to 33 ft, and the honest reason to choose it over the Nautilus is owner satisfaction rather than specification.

Several owners in the reviews cite it as a cheaper replacement for a Pentair or Maytronics robot that failed, which is the most common purchase scenario in pool owner forums. The active front scrubber brush plus strong suction collects sand, algae and small debris, and the top-load basket is the easiest filter on any corded machine we reviewed.

Waterline performance on gunite and vinyl

Owners specifically report the wall climbing reaching the waterline on both lined and gunite pools, which is the part that leaves a visible ring if a robot cannot manage it. The active front brush spins against the wall as the machine ascends, so the band above the tile line gets real scrubbing rather than a suction pass.

As with the other corded Dolphins, cleaning stops at the waterline. Anything above it remains a manual job.

Filter design and the sand-loaded pool

The screen-style basket captures fine road dirt and insect particulate that pleated filters let through, which is a quiet advantage in a yard with trees. It is not a micron-rated cartridge, so very fine particles still return to the water, and the basket needs rinsing after every sandy cycle to avoid the cloudy-water-after-cleaning pattern that owners complain about.

The lifespan question nobody answers on the spec sheet

There are isolated reports here of units failing after about two summers, which lines up with when the limited warranty ends. That matches the pattern in owner threads, where a three-plus-year failure is the most common reason people replace a robot rather than buy their first one.

Budget for a five-to-eight year life and treat the filter as a consumable. Buying from an authorized dealer rather than a marketplace listing is what makes a warranty claim straightforward when something does fail.

5. Aiper Scuba S1 – 270 minutes of runtime and 3-micron filtration

The Scuba S1 is the machine to look at if your pool collects fine dust and sand rather than leaves, because the dual-layer filtration pairs a replaceable 3-micron ultra-fine filter with a 180-micron standard filter. That micron rating is the finest in this roundup alongside the Scuba S3, and it is the reason owners chasing water clarity gravitate here.

Runtime is the other headline. The 112 watt-hour lithium-ion pack delivers up to 270 minutes in Eco mode and up to 180 minutes in Auto, Floor, Wall or Scheduled modes, which makes this the machine to set on a schedule for owners who are not home during the day.

What 3-micron filtration actually buys you

Mesh rating describes the size of the particle that passes through. A 180-micron standard filter stops twigs and leaves; a 3-micron layer stops fine silt and pollen that turn a pool hazy. If you have a flagstone or sanded paver deck, wind-blown grit settles constantly and the finer layer keeps it out of the water column.

Navigation and the 11-sensor array

Eleven high-precision sensors drive a WavePath dual-path algorithm, and owners report fewer missed zones than with simple bounce navigation. The Caterpillar Treads mobility system gives it the grip to climb walls and cross pool floor transitions that stop wheeled robots.

Where the S1 frustrates owners

Two things come up repeatedly. The 3-hour charge time is long relative to a 180-minute working cycle, so turnaround between runs is a genuine constraint. And at 17 lbs it is one of the heavier cordless machines here, which is awkward to lift out by the handle alone.

The app connection drops once the unit is submerged, so modes must be set before launch. That is a limitation shared by nearly every cordless robot, not a defect unique to this model.

6. WYBOT C2 – the cordless pick for pools up to 2,152 sq ft

The C2 is the step up from the C1, and the difference is suction. Three brushless motors and a dual filtration stack of a 10 micron ultra-fine filter over a 180 micron primary filter give noticeably better wall and waterline scrubbing than a typical cordless machine, which is where most of these robots underperform.

Coverage is rated up to 2,152 sq ft with up to 180 minutes of runtime, which makes this the right cordless choice if your pool sits between 1,600 and 2,000 sq ft and the C1’s rating feels tight. The 4.6 average is among the highest in this roundup, with 77% five-star reviews and only a 4% one-star share.

Seven cleaning modes and gyroscope path planning

The built-in gyroscope follows optimized paths, and the app exposes seven cleaning modes with scheduling, so you can run a floor-only pass on a busy weekend and a full floor, wall and waterline cycle overnight. Owners report that sloped and kidney-shaped inground pools develop few dead zones.

The foam float detail that decides wall climbing

This is the single most important line in the C2 reviews: without the supplied foam floats installed, it does not climb the pool wall. With them, wall and step climbing works as advertised. Fit the floats before the first run, not after you decide the machine is defective.

Once fitted, it handles walls and steps and scrubs the waterline more thoroughly than most cordless units in its class.

Weight, retrieval and the charging port

At 24 lbs this is the heaviest cordless machine on our list alongside the Beatbot AquaSense 2, and that is where the auto-park feature stops being a convenience and starts being a necessity. The included retrieval hook attaches to a standard pool pole.

One more setup note: the charging plug must be unscrewed and re-secured before immersion, and a handful of users report it hanging up on corners and steps before working itself free. Budget for the occasional second pass.

7. Beatbot Sora 30 – 6800 GPH suction for heavy debris loads

If your pool sits under trees, suction is the number that matters, and the Beatbot Sora 30 has the most of it. Owners report it pulling heavy leaf debris through in a single pass rather than clogging the intake and stalling, which is the failure mode that forces mid-cycle cleanups on a wooded lot.

For context, the 6800 GPH figure comes from a HydroBalance intake structure shaped so heavy debris is drawn in without sealing over, paired with a 5L capacity that keeps the volume between emptying stops high. The corded Dolphin Escape in this roundup filters above 4000 GPH, so the Sora 30 leads on suction rather than on category.

Five hours of runtime and the charge-time problem

The 10,000 mAh battery delivers up to five hours of continuous floor cleaning over pools up to 3,229 sq ft, which is the longest working time of any machine in this roundup. That runtime comfortably covers even a large freeform pool in a single cycle.

It comes with the longest charge time we saw at 4.5 hours, so the practical rhythm is one long cycle, then a full charge while you do something else. Set the schedule for overnight and the ratio stops mattering.

Smart surface parking solves the lifting problem

When the cycle ends or the battery drops below 12%, the unit releases its internal water and floats to the surface, and one-touch app retrieval calls it back. Owners describe this as the feature that makes a heavy cordless machine manageable, because you scoop a floating 10.5 kg object instead of hauling a waterlogged one up the pool wall.

Where the Sora 30 falls short

The app is comparatively basic for a machine at this level, and navigation is pattern-based rather than camera-driven, so complex pool shapes can end up with overlap or a missed zone. Neither issue matters much if your pool is a clean rectangle and your problem is volume of debris.

At 253 reviews the review base is smaller than the Dolphin and WYBOT machines here, so treat the specification as well-evidenced and the long-term reliability as less proven.

8. Aiper Scuba S3 – the best waterline scrubbing in this roundup

The Scuba S3 exists to solve one problem properly, and that problem is the band of scum, sunscreen film and pollen line that sits just above the water. Instead of driving up the wall head-on, it performs a continuous sideways pass at 5 feet per minute that scrubs 2 inches above the waterline, which is a genuinely different approach from every other machine on this list.

It carries the highest average rating of the ten at 4.7, with 74% five-star reviews and no one-star feedback at all. Treat that as promising rather than proven, because 86 reviews is a small base compared with the Dolphin machines.

How the sideways waterline pass works

Most robots climb the wall vertically and stop at the tile line, which is why the scum ring above it survives. The S3 rotates its brushes into a lateral scrubbing motion once it reaches the surface, covering the vertical band most machines ignore. Multiple owners of leaf-heavy pools specifically confirm the wall climbing and waterline scrubbing hold up in real conditions.

Filtration, runtime and the auto-park

Filtration pairs 180-micron mesh with a replaceable 3-micron ultra-fine layer, so it handles both debris and fine grit. Runtime reaches up to 240 minutes in Eco mode, and auto-parking holds the unit at the waterline for 10 minutes after cleaning with an app notification.

At 18 lbs it is light enough to lift with one hand or pull out with a hook, which is a real advantage over the 24-pound cordless machines.

The two things to resolve before buying

The debris basket is small for the size of the machine and needs emptying several times in heavy leaf conditions, so budget for mid-cycle interruptions if you have a wooded yard. More importantly, owners report that replacement ultra-fine filters were hard to find, including on the manufacturer’s own site, so confirm filter availability before you commit.

On the positive side, Aiper customer service is repeatedly praised for fast replacement machines and free replacement filters, which partly offsets that risk. App connectivity still drops underwater, so set your mode before launch.

9. WYBOT B1 – the lightest cordless unit for easy retrieval

The B1 is the cordless option for anyone whose back cannot handle a 24-pound machine coming out of a pool. At 14.3 lbs it is the lightest cordless unit we reviewed, and everything else about it follows from that design choice: quad-roller brushes, a 6-liter top-access basket and a smaller 58 watt-hour battery.

Rated for pools up to 1,150 sq ft with up to 120 minutes of runtime, plus a one-hour Quick Clean mode for touch-ups between full cycles. The 4.6 average is strong, with a 1% one-star share, so the complaints are about capability limits rather than quality.

Brush layout and floor transitions

Quad-roller brushes provide traction over drains, seams, slopes and uneven floors, and dual front side brushes push debris from edges and corners into the path. Owners report that it navigates those transitions smoothly without getting stuck, which is the most common failure mode on real inground floors.

Wall climbing needs the tabs installed

As with the C2, the supplied floating foam tabs are required for reliable wall climbing, and without them some units fail to climb fully with the rear wheels leaving the pool floor. Install them before the first cycle.

Even fitted, this is a floor and edge machine more than a wall machine. If a spotless waterline is your top priority, choose the Scuba S3 instead.

Where the light design costs you

120 minutes is the shortest cordless runtime here, so large pools need a recharge between cycles. The top lid latch on the debris basket is hard to release and needs downward pressure on the lid, which is a small annoyance you will feel every time.

10. Beatbot AquaSense 2 – premium cordless tech for large pools

The AquaSense 2 is the premium end of the cordless range, rated for pools up to 3,230 sq ft with a 203.04 watt-hour battery and a charging dock included. Owners report the single most valuable feature is that the robot cleans a 16 by 30 ft pool twice on one charge, which removes the mid-day recharge planning entirely.

It pairs with the Beatbot Sora 30 as the two highest-output cordless machines we tested, and it holds an 84% five-star share, the highest in this roundup, off a small base of 49 reviews.

Double-pass waterline cleaning

Where most robots make a single vertical pass, the AquaSense 2 makes two, and owners single out the waterline result as the reason for the premium. It removes the grime ring, sunscreen film and pollen buildup that other cleaners leave behind, and it runs quietly enough to use before guests arrive.

Retrieval without back strain

Auto surface parking raises the robot above the water after cleaning or on low battery, SmartDrain releases the internal water, and one app tap calls it back. Owners describe this as the feature that makes lifting a heavy unit bearable, and the rigid debris container can be banged out and rinsed in under a minute.

What you give up for it

It is the heaviest machine in this roundup, and it struggles with steps, deep-end benches and very tight corners, which need manual brushing. The app cannot communicate with the robot while it is submerged, so modes must be set before launch, and the app itself offers limited detail beyond runtime and date rather than pool mapping.

Note also that the AquaSense 2 drops the camera and surface skimming of the Ultra model at a similar level. If you want skimming capability, look at the Ultra instead.

Corded vs Cordless: Which Type Should You Buy in 2026?

Buy corded if the pool is large, the leaf load is heavy, or you already own a power supply near the pool. Buy cordless if the cord bothers you more than charge time bothers you. That is the honest answer to the single most-asked question in pool owner forums, and the trade-offs are narrower than the marketing suggests.

The real corded advantage is not quality. It is runtime and certainty. A corded unit cannot stop mid-cycle because the battery ran down, and it never needs a replacement pack three seasons from now. The real cordless advantage is not freedom in the abstract; it is that you will never again spend five minutes untangling a cord before a cycle.

Here is how the two types actually differ in daily use.

Cord handling. Corded robots tangle and must be laid out straight between runs, and several reviews here flag twisting as the top annoyance. Cordless machines have no cord to manage at all, which is the sentiment that recurs most often in owner threads.

Runtime. Corded units run a fixed two-hour cycle and then stop, with no ceiling on pool size beyond the length rating. Cordless machines range from 120 minutes on the WYBOT B1 to five hours of floor cleaning on the Beatbot Sora 30, and pools above roughly 2,200 sq ft can exceed what a smaller battery covers on one charge.

Wall climbing. Not a power-type advantage. It is decided by the drive train and the brushes, which is why the cordless C2 can scrub the waterline better than most corded machines once its foam floats are fitted.

Retrieval and weight. Corded machines drain in place and are lifted out, and the Dolphin Escape is listed at 14 lbs. Cordless machines must be lifted with their full battery inside, which is why auto-park and SmartDrain features matter so much in that category.

Long-term maintenance. Corded units need no battery replacement. Cordless units depend on a lithium-ion pack that degrades over a few seasons, and owners report replacement batteries being unavailable or expensive for off-brand models, so brand support is part of the purchase decision.

Price and warranty. Corded units generally cost less at the entry point and the established Dolphin repair network is broad. Cordless models hold two-year manufacturer warranties in several cases, which is competitive.

Our verdict: if you can live with a cord, the corded Dolphin models are the safer long-term purchase. If you cannot, a cordless machine from an established brand is a genuine improvement in daily life rather than a compromise, and the WYBOT C1 is the sensible place to start.

How to Choose a Robotic Pool Cleaner for Your Inground Pool

Work through these criteria in order. Most disappointments trace back to a buyer who started with app features and ignored pool size or wall-climbing angle.

1. Measure your pool before anything else

Check the coverage rating against your actual pool, not your guess at it. Multiply pool length by width by average depth and multiply by 1.5 for a rough square-foot estimate, then compare with the robot’s rating. A machine rated for 1,150 sq ft in a 1,500 sq ft pool will park before it finishes, and that reads as a bad robot when it is really a sizing error.

Pool length matters just as much. A robot rated to 33 ft will not usefully clean a 40 ft pool even if the square footage works out.

2. Wall climbing is the decisive inground feature

Wall climbing separates an inground robot from an above-ground one, and it is what removes the visible scum ring. Look for a stated climb angle or confirmed wall and waterline cleaning, and note that some cordless models only climb reliably with the supplied floating foam tabs fitted.

For the waterline band above the tile, a machine with a dedicated lateral scrubbing pass, such as the Aiper Scuba S3, outperforms one that simply drives up the wall.

3. Match the pool surface

Concrete and gunite pools need aggressive brush scrubbing and higher flow to lift embedded grit and algae from a rough surface. Vinyl liner pools need tracked or roller drive that will not scuff or catch the liner, and gentler brush pressure. Fiberglass pools have smooth walls and are the easiest to clean, so a mid-range machine suffices.

Saltwater pools with a salt chlorine generator add one more consideration: rinse the machine with fresh water after every use, because salt residue left on drive components and brush bearings shortens their life. The Dolphin Advantage and the corded Escape are the simplest to rinse down because they drain before you lift them.

4. Judge filtration by what actually dirties your pool

Leaves, twigs and grit call for a screen-style basket, which is what the corded Dolphins use. Fine dust, pollen and sand call for a micron-rated ultra-fine filter, where the 3-micron layer on the Aiper Scuba S1 and S3 and the 10 micron layer on the WYBOT C2 make the difference. Finer filtration clogs faster, so factor in more frequent rinsing.

Debris capacity is the quiet metric. A 6-liter basket like the WYBOT B1’s will outlast a smaller one on a leaf-heavy pool, and mid-cycle emptying is the most common reason a cordless robot feels like more work than a hose.

5. Look at how it will be retrieved

Weigh the machine. Anything above 20 lbs is worth pairing with a pool pole and a hook, and auto surface parking that floats the unit is worth more than any app feature. The Aiper Scuba S3 at 18 lbs and the WYBOT B1 at 14.3 lbs are the two easiest to lift one-handed in this roundup.

6. Treat warranty length and parts as part of the price

Owners trust brand reputation and warranty length over feature counts, and they distrust listings with few or no verified reviews, so a long review history is worth as much as a long warranty. Buying from an authorized dealer rather than a marketplace listing is what makes a warranty claim straightforward.

For cost of ownership, filter media and impeller parts are the recurring expense, and the practical figure owners use is cost per year of expected service over roughly a three-year life. That framing tends to favor a mid-priced machine from a brand with good parts availability over the cheapest listing on the page.

7. What to do in the first 30 days

Charge cordless models fully, rinse the filter, and run one test cycle before scheduling anything. Note the actual runtime against your pool size, because manufacturers quote the best case. Then set a cleaning schedule in the app, empty the basket weekly in leaf season, inspect the impeller, and store cordless machines off-charge indoors in a cool, dry place out of direct sun.

Also worth setting expectations: robots are not designed to sit in the water indefinitely between cycles, and removing them after a run protects seals and drive components. If floor cleaning is only part of the job, our guides to upholstery cleaners and carpet cleaners cover the rest of the weekend the same way.

Frequently Asked Questions

Which Robotic Pool Cleaner Should You Buy?

For most inground pool owners, the Dolphin Nautilus CC Plus is the pick: it is corded, so nothing runs out mid-cycle, and it is the most proven machine on this list by review volume alone. If you have a pool up to 33 ft and want the highest average rating among the corded options, the Dolphin Advantage edges it out at 4.4 stars.

If you will not own a cord, start with the WYBOT C1 for pools up to 1,618 sq ft, or step up to the WYBOT C2 if you need dual filtration and more coverage. For a sandy or dusty pool, the Aiper Scuba S1 with its 3-micron layer is the one to buy. For stubborn waterline scum above the tile, the Aiper Scuba S3 scrubs higher than anything else we reviewed. Under heavy tree cover, the Beatbot Sora 30 moves the most debris, and the Beatbot AquaSense 2 is the premium pick for very large pools.

Whichever one you choose, measure your pool first, fit the supplied floats, and rinse the filter after every cycle. Those three steps decide whether your robotic pool cleaner looks like the best purchase in the category or the most disappointing one.