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The Narwal Flow 2 Ultra wins with a score of 9.1/10. Best for: Hard floor homes that prioritize mopping quality.

The premium Roomba with the best pet-waste avoidance in the industry, but its basic wipe-only mopping falls short of Roborock and Dreame flagships.
Read full reviewThe undisputed mopping champion — best FlowWash system with 140°F heated water
Read full review| iRobot Roomba Combo j9+ | Spec | Narwal Flow 2 Ultra |
|---|---|---|
| $899 | Price | $1499 |
| 5500 | Suction (Pa) | 30000 |
| 4460 | Battery (mAh) | 7000 |
| 67.0 | Noise (dB) | — |
| — | Dustbin (ml) | — |
| — | Water Tank (ml) | — |
| — | Mop Lift (mm) | — |
| — | Height (mm) | — |
| — | Weight (kg) | — |
| vSLAM Camera | Navigation | LiDAR + AI Camera |
| ✅ | Self-Empty | ✅ |
| ❌ | Self-Wash Mop | ✅ |
| ❌ | Self-Dry Mop | ✅ |
| ✅ | AI Obstacle | ✅ |
The Narwal Flow 2 Ultra is the better choice with an overall score of 9.1/10 — best for hard floor homes that prioritize mopping quality. The iRobot Roomba Combo j9+ is more affordable at $899 vs $1499.