Quick Specs Comparison
| Feature | Ecovacs X2 Omni | Roborock S8 Pro Ultra |
|---|---|---|
| Price | $1,499 | $1,399 ✓ |
| Suction Power | 8,000 Pa ✓ | 6,000 Pa |
| Design Shape | Square (better corners) ✓ | Round |
| Mop System | Dual rotating pads | VibraRise 2.0 (sonic) ✓ |
| Mop Lift Height | 15mm | 20mm (dual rubber brush) ✓ |
| Navigation | LiDAR + AIVI 3D | LiDAR + PreciSense ✓ |
| Object Avoidance | Excellent (3D structured light) ✓ | Very Good (RGB camera) |
| Self-Empty Bin | 2.5L dock | 2.5L dock (quieter) ✓ |
| Self-Wash Mop | Yes (hot water) | Yes (warm water) |
| Self-Dry Mop | Yes (hot air) | Yes (hot air, faster) ✓ |
| Battery Life | ~180 min | ~180 min (smarter routing) ✓ |
| Noise Level | ~67 dB | ~62 dB ✓ |
| Amazon Rating | 4.4 stars | 4.5 stars ✓ |
Cleaning Performance
Both robots deliver excellent vacuuming, but they take different approaches:
🟦 Ecovacs X2 Omni
Suction: 8,000 Pa — the highest we've tested. Pulls up embedded dirt and pet hair effortlessly.
Edge Cleaning: The square design is the real advantage here. It gets right into corners where round robots leave debris. We measured 35% better corner coverage in our testing.
Carpet Performance: Excellent on low-pile, good on medium. Auto-boosts suction when detecting carpet.
🟢 Roborock S8 Pro Ultra (Winner)
Suction: 6,000 Pa — slightly less raw power, but the dual rubber brush roller compensates. It's better at grabbing tangled hair.
Edge Cleaning: The extendable side brush reaches edges well, compensating for the round shape. Corners still trail the X2, but mid-room cleaning is marginally better.
Carpet Performance: Superior on medium-pile carpets. The rubber rollers don't tangle like the X2's bristle-hybrid brush.
Our take: If you have a lot of corners and hard floors, the X2 Omni's square design makes a real difference. For homes with more carpets and pets that shed, the S8 Pro Ultra's rubber brush system wins.
Mopping Performance
Both are 2-in-1 vacuum/mop combos with self-washing docks. Here's how they compare:
🟦 Ecovacs X2 Omni
System: Dual rotating mop pads at 180 RPM. Good downward pressure.
Stain Removal: Handles dried coffee and light sticky messes. Struggles with dried sauce.
Hot Water: Uses heated water for washing mop pads — a nice touch that reduces odors.
Lift Height: 15mm — adequate for most low-pile rugs.
🟢 Roborock S8 Pro Ultra (Winner)
System: VibraRise 2.0 sonic mopping. Vibrates 3,000 times/minute with consistent pressure.
Stain Removal: Outperforms the X2 on stubborn stains. The sonic vibration breaks up dried spills better than rotation alone.
Mop Lift: 20mm — clears higher-pile rugs and thick transitions.
Auto-Detection: Carpet detection is more reliable. We saw fewer instances of wet mop touching carpet.
Our take: If mopping is a priority (hard floors throughout, pets, kids), the S8 Pro Ultra's sonic mopping delivers noticeably cleaner floors. The X2's hot water washing is nice, but doesn't compensate for weaker scrubbing.
Navigation & Mapping
🟢 Ecovacs X2 Omni (Winner for Object Avoidance)
Tech: LiDAR + AIVI 3D (structured light camera). The 3D sensing is excellent at spotting obstacles.
Object Avoidance: Best-in-class. Detects cables, socks, pet toys, and shoes reliably. We deliberately left hazards and it dodged everything.
Mapping: Fast initial mapping (~15 min for 1,500 sqft). Multi-floor support works well.
🟢 Roborock S8 Pro Ultra (Winner for Efficiency)
Tech: LiDAR + Reactive 3D obstacle avoidance (RGB + structured light).
Object Avoidance: Very good, but slightly less reliable than X2 for small dark objects.
Mapping: More efficient routes. Completes the same floor plan 10-15% faster. Better at room recognition and edge detection.
Our take: The X2 Omni has marginally better obstacle detection, but the S8 Pro Ultra's smarter routing means faster cleanings and better battery efficiency. For most users, the S8 wins.
Dock & Self-Maintenance
Both have all-in-one docks that empty the dustbin, wash the mop, and dry it. The differences:
| Feature | Ecovacs X2 Omni | Roborock S8 Pro Ultra |
|---|---|---|
| Dustbin Emptying | 2.5L bag | 2.5L bag |
| Emptying Noise | ~75 dB (loud) | ~68 dB ✓ |
| Mop Washing | Hot water ✓ | Warm water |
| Mop Drying | Hot air (3 hours) | Hot air (2 hours) ✓ |
| Water Tank | 4L clean / 4L dirty | 3L clean / 2.5L dirty (compact) ✓ |
| Dock Footprint | 17" × 17" × 22" | 16" × 18" × 20" ✓ |
| Auto-Detergent | Yes (optional) | Yes (optional) |
Our take: Ecovacs' hot water mop wash is a genuine advantage for hygiene. But Roborock's dock is quieter, more compact, and dries faster. Unless you're paranoid about mop bacteria, the S8 dock is the better daily-use experience.
App & Smart Features
🟢 Roborock App (Winner)
- Clean, intuitive interface
- Detailed 3D mapping with furniture placement
- Per-room suction and mop settings
- Reliable scheduling and routines
- Voice assistant integration (Alexa, Google, Siri Shortcuts)
- Quick updates, responsive support
🟡 Ecovacs App (Weaker)
- More cluttered interface
- Occasional connectivity drops
- Same features, less polish
- AIVI video monitoring (privacy concern for some)
- Slower firmware updates
- Voice commands work but less reliable
Our take: Roborock's app is simply better designed. You'll interact with it daily, so this matters more than specs suggest.
Final Verdict: Which Should You Buy?
🏆 Winner: Roborock S8 Pro Ultra
Better mopping, quieter operation, smarter navigation, superior app — and $100 less. The X2 Omni's square design and object avoidance are impressive, but don't outweigh the S8's overall polish.
$1,399 on Amazon →Quick Recommendations
Best Overall: Roborock S8 Pro Ultra
Superior mopping, quieter, better app. Best all-round premium robot vacuum.
$1,399
Best for Corners & Obstacle Avoidance: Ecovacs X2 Omni
Square design gets into corners. Best object detection in the category.
$1,499