iRobot Roomba Combo j9+ vs Roborock Q8 Max+

A detailed side-by-side comparison scored on 14 objective criteria with weighted scoring (max 12 points).

WINNER

iRobot Roomba Combo j9+

iRobot — #25 overall

6.7/10

$999

Roborock — #26 overall

6.6/10

$599

These are very closely matched. iRobot Roomba Combo j9+ wins by just 0.1 points. However, Roborock Q8 Max+ has 40% cheaper.

Criteria	Weight	iRobot Roomba Combo j9+	Roborock Q8 Max+
Total Score	—	6.7/10	6.6/10
🗺️Navigation & Obstacle Tech	2x	85%*	82%
💨Suction Power	1x	82%*	80%
📐Edge Cleaning	1x	75%	78%*
💇Tangle-Free Rollers	1x	85%*	82%
🧹Mop System	1x	65%*	60%
🔥Mop Drying	0.5x	0%	0%
🧴Integrated Soap	0.5x	0%	0%
🔄Mop Versatility	0.5x	25%	35%*
🗑️Auto-Empty Reliability	1x	88%*	82%
📦Bin Capacity	0.5x	78%	78%
⏱️Refill Frequency	0.5x	75%	78%*
🧗Obstacle Mobility	1x	35%	35%
📏Low Clearance	0.5x	60%*	45%
📱App Quality	1x	82%	88%*
Price	—	$999	$599
Pros		+Trusted iRobot brand +Retractable mop lifts fully +Strong obstacle avoidance +Self-emptying base	+Roborock quality under $600 +DuoRoller brush system +Self-emptying +Basic mopping included
Cons		-Mop is basic (no wash/dry) -Expensive for features -No hot air drying	-No mop washing/drying -No AI obstacle avoidance -Basic mop pad
Suction		4,000 Pa	5,500 Pa
Navigation		Camera + AI Avoidance	LiDAR
Mop Type		Pad	Pad
Self-Empty		Yes (60 days)	Yes (60 days)
Runtime		120 min	240 min
Mobility
Obstacle Climbing		Standard	Standard
Retractable LiDAR		No	No
Adaptive Chassis		No	No
Multi-Mop Switch		No	No
		Check Price Full Review	Check Price Full Review