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iRobot Roomba Plus 405 Combo vs Roborock S8 Pro Ultra
The Roborock S8 Pro Ultra wins with a score of 8.0/10. Best for: Hard-floor and mixed-flooring homes wanting top mopping without flagship pricing.
iRobot Roomba Plus 405 Combo
A solid mid-tier Roomba that finally brings LiDAR navigation and a self-washing dock under $500. But weak deep-carpet performance and zero obstacle avoidance make it hard to recommend over the Roborock Q Revo or Dreame L40 Ultra at the same price.
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Roborock S8 Pro Ultra
Best-in-class mopping and navigation for the price, held back by average carpet deep-clean and no hot-water dock.
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Specifications
| iRobot Roomba Plus 405 Combo | Spec | Roborock S8 Pro Ultra |
|---|---|---|
| $400 | Price | $1099 |
| — | Suction (Pa) | 6000 |
| 5000 | Battery (mAh) | 5200 |
| 65.0 | Noise (dB) | 66.0 |
| — | Dustbin (ml) | — |
| — | Water Tank (ml) | — |
| — | Mop Lift (mm) | — |
| — | Height (mm) | — |
| — | Weight (kg) | — |
| LiDAR | Navigation | PreciSense LiDAR + Structured Light & IR |
| ✅ | Self-Empty | ✅ |
| ✅ | Self-Wash Mop | ✅ |
| ✅ | Self-Dry Mop | ✅ |
| ❌ | AI Obstacle | ✅ |
The Verdict
The Roborock S8 Pro Ultra is the better choice with an overall score of 8.0/10 — best for hard-floor and mixed-flooring homes wanting top mopping without flagship pricing. The iRobot Roomba Plus 405 Combo is more affordable at $400 vs $1099.