Short answer: The Roborock Q8 Max is the better robot vacuum. Roborock lists 5,500 Pa against the Q7 Max’s 4,200 Pa, two all-rubber DuoRoller brushes instead of one, and Reactive Tech obstacle avoidance, which the Q7 Max listing does not claim. But the Q8 Max is hard to find new on Amazon now. If you want Q8 Max features, buy its successor, the Roborock Q10 S5+, which Roborock’s listing calls an upgrade from the Q8 Max+. Buy the Roborock Q7 Max only if you find it at a clear discount and your floors are mostly hard with little clutter.

Q7 Max vs Q8 Max specs

Spec Roborock Q7 Max Roborock Q8 Max Q10 S5+ (successor)
Suction (maker figure) 4,200 Pa 5,500 Pa 10,000 Pa
Main brush Single all-rubber brush Dual all-rubber DuoRoller Dual anti-tangle design
Obstacle avoidance Not claimed Reactive Tech Reactive Tech
Navigation PreciSense LiDAR PreciSense LiDAR, up to 4 floor maps PreciSense LiDAR, up to 4 maps
Battery and runtime Up to 180 min 5,200 mAh; up to 240 min (quiet mode, hard floor) 5,200 mAh; up to 150 min
Bin and tank 470 ml bin, 350 ml tank (combined) Not listed Not listed here
Mop Pad with 30 water-flow levels Pad with 30 water-flow levels VibraRise 2.0 vibrating mop, lifts 8 mm on carpet
Auto-empty Q7 Max+ version Q8 Max+ version (2.5 L bag) Included, up to 7 weeks
Buy Amazon Not available new on Amazon when checked Amazon

Where the Q8 Max is better

  • Pet hair and carpet: two counter-rotating rubber brushes instead of one. Roborock claims a 20% higher hair pick-up rate than the Q7 series in its own comparison.
  • Clutter: Reactive Tech obstacle avoidance helps with shoes and chair legs. The Q7 Max relies on LiDAR and bumpers, so pick up cords and socks first.
  • Big homes: Roborock rates the Q8 Max at up to 240 minutes in quiet mode on hard floors and up to 3,230 sq ft.

Where the Q7 Max is fine

  • Mostly hard floors, tidy rooms: 4,200 Pa with carpet boost, LiDAR mapping, no-go and no-mop zones, and up to 180 minutes per the listing.
  • Less brush cleaning: one brush to clear instead of two.
  • Price: only worth it at a clear discount, because the Q10 S5+ and the newer Q7 L5 and Q7 M5+ are current models in a similar price band.

Which should you buy?

For a brand-level view, see Dreame vs Roborock.

Sources

Checked October 31, 2026. Desk research from manufacturer pages and listings; we have not tested these robots.