Roborock Q8 Max+ vs iRobot Roomba j9+

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

WINNER

Roborock Q8 Max+

Roborock — #26 overall

6.6/10

$599

iRobot — #28 overall

6.1/10

$599

Roborock Q8 Max+ edges out iRobot Roomba j9+ with a 0.5 point advantage.

Criteria	Weight	Roborock Q8 Max+	iRobot Roomba j9+
Total Score	—	6.6/10	6.1/10
🗺️Navigation & Obstacle Tech	2x	82%	85%*
💨Suction Power	1x	80%	85%*
📐Edge Cleaning	1x	78%*	75%
💇Tangle-Free Rollers	1x	82%	85%*
🧹Mop System	1x	60%*	0%
🔥Mop Drying	0.5x	0%	0%
🧴Integrated Soap	0.5x	0%	0%
🔄Mop Versatility	0.5x	35%*	0%
🗑️Auto-Empty Reliability	1x	82%	88%*
📦Bin Capacity	0.5x	78%	80%*
⏱️Refill Frequency	0.5x	78%	85%*
🧗Obstacle Mobility	1x	35%	35%
📏Low Clearance	0.5x	45%	60%*
📱App Quality	1x	88%*	82%
Price	—	$599	$599
Pros		+Roborock quality under $600 +DuoRoller brush system +Self-emptying +Basic mopping included	+Trusted iRobot brand +Excellent camera-based avoidance +Strong pet hair pickup +Easy rubber brush maintenance
Cons		-No mop washing/drying -No AI obstacle avoidance -Basic mop pad	-No mopping capability -Slightly weaker in corners -Less cutting-edge than competitors
Suction		5,500 Pa	4,000 Pa
Navigation		LiDAR	Camera + AI Avoidance
Mop Type		Pad	None
Self-Empty		Yes (60 days)	Yes (60 days)
Runtime		240 min	120 min
Mobility
Obstacle Climbing		Standard	Standard
Retractable LiDAR		No	No
Adaptive Chassis		No	No
Multi-Mop Switch		No	No
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