Greenworks AiMowbot C20

Greenworks retired the wired Optimow line for consumers in 2026 and replaced it with AiMowbot, and the C30Z is the 3/4-acre model in the front-wheel-drive C series. It uses what Greenworks calls RTKVision 2.0: an RTK reference antenna kit in the box for roughly 1 in positioning, with cameras and night-vision sensors that help it hold its line under trees and spot 200-plus obstacle types. Mowing zones, paths and no-go areas are drawn in the app; there is no wire to bury. The spec sheet is strong for $1,599.99: 45% (24 degree) slopes, an electric height adjuster from 0.75 to 3.5 in, a 54 dB noise rating, IPX6 washdown, LED headlights and a 50-minute charge. It is a front-wheel-drive three-wheeler, so it is not a Luba-style AWD climber, and the 8 in cut is narrower than a Mammotion Yuka's. Two things to weigh before buying: 4G and anti-theft tracking need a subscription Greenworks has not priced publicly, and edge cutting is rated at 4 in from the border, so keep the string trimmer. The 1/2-acre C20 ($999.99) and 1-acre C40 ($1,499.99) are the siblings and the G series adds AWD. It is a 2026 launch with no owner track record yet, which is worth remembering given how much grief the old Optimow app caused. Best for 1/2- to 3/4-acre yards with moderate slopes and a buyer who wants a 3-year warranty behind a wire-free mower.

Best for Half- to three-quarter-acre yards with some slope whose owner wants a current-generation wire-free mower from a big-box brand.

The Optimow 33H is Greenworks' one-third-acre boundary-wire mower, now sold through the Greenworks Commercial dealer network rather than big-box stores; the online store lists it at $1,099.99 and sold out, so a local dealer is the realistic route. The H means high cut, 2.4 to 4.0 in, which suits fescue and Kentucky bluegrass lawns that the 0.8 to 2.4 in Optimow 33 would scalp. Mechanically it is a conventional Husqvarna-style platform: boundary wire plus guide wires, a random bounce pattern, three pivoting razor blades on an 8.7 in disc, a 24V battery, 130-minute recharge, IPX5 washdown and a 19 degree (about 34%) slope rating. Its differentiator is built-in 4G with GPS: the GreenGuide app works from anywhere and the mower can be tracked if it walks off. Owners of the sibling Optimow 50H on Best Buy like the cut but call the app frustrating, and the cellular plan is only prepaid for two years before an annual fee kicks in. There is no edge-cut mode and no camera, so it bumps its way around obstacles. Against a Husqvarna Automower 310 Mark II it is cheaper with a longer warranty, but dealer-only availability and the app complaints keep it from being an easy pick. Best for a flat to gently sloped third-acre lawn within reach of a Greenworks dealer.

Best for Cool-season lawns around a third of an acre whose owner has a nearby Greenworks dealer and wants cellular tracking without wire-free pricing.

The RockNeo Q1 (Q110H in the US) is Roborock's entry mower: a 27 pound, rear-wheel-drive machine for quarter-acre lawns that lists at $1,299 but has been selling on Amazon for $800 to $1,000 most of the summer. It uses the same full-band RTK antenna plus camera VSLAM as the RockMow, and Roborock later pushed a network RTK mode so you can skip the antenna if you have decent cell coverage. Owners describe it as whisper quiet, good at systematic back-and-forth mowing of open lawn, and nicer to map than Segway's app, and they like the headlights for evening runs. They are also blunt that it is for simple, flat, easy yards: the plain wheels get stuck if it wanders onto rock beds or sand, it struggles on real slopes despite the 45 percent rating, and it needs a wide-open view of the sky to hold position. Cutting height is a manual dial from 1.6 to 3.1 inches, edge cutting needs the $90 PreciEdge module, and even with it the software keeps a cautious margin around anything hanging over the lawn. Compared with a Navimow i105 it is quieter and maps better; compared with a Mammotion Yuka mini it needs an antenna but climbs about the same. Best for flat, open quarter-acre lots where price and quiet matter most.

Best for Flat, open quarter-acre lawns where a quiet, inexpensive RTK mower with a good app beats hill-climbing ability.

The i2 AWD replaces the i105N and i110N with the same 7.1 in single-disc body but three fixes for the old model's main complaints: a third, on-demand drive motor on the front zero-turn wheel with knobby off-road tires, a 4G module built in instead of the $120 Access+ add-on, and Network RTK that removes the antenna from setup where coverage exists. Slope rating rises from 30% to 45%, and Segway says the rear motor only engages when traction is needed, which stretches runtime by up to 30%. The i206 AWD ($999) carries a 2.55Ah pack for about an hour of mowing and a 0.15 acre rating; the i210 AWD ($1,299) doubles that to 5.1Ah, roughly two hours, and a quarter acre, and both recharge in about the same time they run. The cutting hardware is unchanged: 2 to 3.6 in height on a manual knob, a narrow deck, and no edge mode. Mowing Magic found the zero-turn wheel stopped the turf scuffing that plagued the i1 and rated the 59 dB noise as conversation-level, but confirmed the manual height knob and the uncut wall strip. Compared with the leftover i110N at $929 you pay a little more for real traction, built-in 4G and antenna-free setup; compared with the i215 LiDAR at $1,599 you give up LiDAR positioning under heavy tree canopy and the wider 8.6 in deck.

Best for Small suburban yards up to a quarter acre with a few slopes or muddy patches, for buyers who want antenna-free setup under $1,300.

The GOAT O1000 RTK is the cheapest way into a properly mapped, wire-free robot mower from a big brand, and at $999.99 it undercuts the Segway Navimow i110N while doing most of the same job. You mount the included RTK antenna somewhere with open sky, let the mower auto-map, and then carve the map into zones and no-go areas in the Ecovacs Home app. A front camera and 3D ToF sensor handle obstacle avoidance and help it hold position when the satellite view gets patchy under trees. Owners on Amazon like the narrow 1.31-foot body for side yards and the TruEdge pass that gets close to fences, and several say it tamed rough, unmanicured rural lawns. The catches are a slow pace and a small 4 Ah battery: about 65 minutes of mowing, then 100 minutes on the dock, so a full 1/4 acre is an all-day affair. Owners also complain that the manual and app walkthrough are thin, and rural users have hit RTK signal drops that needed a support call. Getting mapping this cheap means you give up the string trimmer of the newer O1000 LiDAR Pro and settle for 45% slopes. For a flat-to-rolling suburban lot under about 8,600 sq ft with a decent view of the sky, it is a strong value pick.

Best for Budget buyers with an open-sky suburban lot under 1/4 acre who want real maps and zones without paying for LiDAR.

The Tron SE is the cheapest way to get the Airseekers FlowCut deck, the six-blade system that lifts grass with airflow, cuts it and re-mulches it before spreading the clippings, which reviewers of the standard Tron rated the best mulching in the category. At $1,099 on sale ($1,299 list) it is $200 under the base Tron, and the spec sheet shows where the money went. The battery drops from 15 Ah to 10 Ah, so runtime falls from about 180 to 120 minutes and per-charge coverage to roughly 0.12 acre; the camera array shrinks from 300 degrees to a single 140 degree front camera; the disc is fixed at 8.66 inches with no wide option; and the rated lawn is 0.37 acre rather than 0.59. What carries over matters on a hilly lot: the same dual rear hub motors and 65 percent slope rating, a 3,000 rpm cutting motor, a swappable battery, IPX6 sealing, a rain sensor, 80 zones, a built-in 4G SIM for network RTK with no antenna to mount, and the 3-year warranty. The SE also rides on omni front wheels, which addresses the turf scuffing and wavy tracks the toed-in casters on early Trons drew criticism for. The trade-off is the narrow camera: even the Tron's 300 degree array ran over sticks and cords, so a 140 degree view will see less at the edges, and a 0.37 acre lawn takes three or four charge cycles. No independent long-term test of the SE exists yet; Airseekers' own page shows 10 reviews averaging 4.8. Best for open, sloped lawns under 0.37 acre where mulch quality beats obstacle finesse.

Best for Open, sloped lawns up to 0.37 acre where mulch quality and hill climbing matter more than tight-corner precision.