Our Verdict
DREAME DREAME L40s Ultra AE Wins

Features 19,000Pa suction (highest specified) and 100-day self-emptying. Choose Shark for superior LiDAR navigation and automatic water tank refills for its strong sonic mopping.
Bottom Line: DREAME DREAME L40s Ultra AE is the better choice. Features 19,000Pa suction (highest specified) and 100-day self-emptying.
Key Differences
The most significant spec differences at a glance
Suction Power
100% moreAdvantages
Where each product wins
DREAME
- Suction Power: 100% higher (19000 vs 0)
Who Should Buy Which?
Find the right product for your needs
Buy DREAME if...
DREAME L40s Ultra AE
If you prioritize raw cleaning power and value for money, the DREAME L40s Ultra AE is your ideal choice. This robot is perfect for homeowners dealing with significant floor debris, pet hair, or multiple floor types, thanks to its industry-leading 19,000Pa suction and TriCut brush. It suits those who want less frequent interaction, offering a 100-day self-emptying dust bin and hot water mop cleaning. While its camera navigation has limitations, its powerful cleaning and advanced mop features at a lower price point make it excellent for budget-conscious buyers seeking top-tier performance.
Buy Shark if...
Shark Stratos | 2-in-1
The Shark Stratos is designed for users who prioritize advanced navigation, comprehensive mopping automation, and a slightly more hands-off experience, even at a higher price. It's best for homes where precise mapping is crucial, as its LiDAR navigation excels in various lighting conditions. If you frequently mop and desire automatic water refills for 30 days, coupled with sonic scrubbing for tough stains, this is for you. Those seeking superior obstacle avoidance and a self-cleaning brushroll to manage pet hair without manual detangling will appreciate its sophisticated features.
Spec Comparison
8 specs compared
| Specification | ![]() | ![]() |
|---|---|---|
| Price | $650 | $899 |
| Rating | 4.2(225) | 4.4(144) |
| Suction Power Pa | 19000 | 0 |
| Navigation Type | camera | LiDAR |
| Self Emptying Base | Yes | Yes |
| Model Number | RLL77SE | AV2700ZE |
| Carpet Detection | Yes | Yes |
| Mopping Function | Yes | Yes |
| Obstacle Avoidance | Yes | Yes |
| App Control | — | Yes |
Swipe horizontally to see all columns
Pros & Cons
Quick overview of strengths and weaknesses
DREAME L40s Ultra
- 19,000Pa suction removes diverse floor debris.
- TriCut brush actively prevents hair tangling.
- MopExtend reaches edges and under furniture.
- Auto-empties dust bin for 100 days.
- Camera navigation struggles in low light conditions.
- Requires proprietary dust bags for auto-empty.
- Dock requires manual water tank refills.
Shark Stratos |
- Strong suction cleans carpets and hard floors.
- Sonic mopping scrubs tough stains, avoids carpets.
- Base self-empties debris 60 days, refills water 30.
- Base washes and dries mop pads automatically.
- Requires periodic purchase of cleaning solution.
- Mop pads and side brushes need regular replacement.
- Advanced features fully accessible via smartphone app.
Frequently Asked Questions
Common questions about this comparison
Which is better for deep cleaning, especially for pet hair?
DREAME, with 19,000Pa suction and a TriCut brush, excels at deep cleaning and pet hair removal. Shark also has strong suction and a self-cleaning brushroll, but its suction power isn't numerically specified, making DREAME the clearer choice for raw power based on provided specs.
What's the main difference in navigation technology?
DREAME utilizes camera navigation, which can face challenges in dim lighting. Shark employs advanced LiDAR navigation, providing more accurate mapping, efficient cleaning paths, and reliable performance across different lighting conditions, ensuring thorough home coverage.
Is the price difference worth it for the Shark Stratos?
Shark's higher price includes advanced LiDAR navigation, sonic mopping, and automatic water tank refills, adding convenience. DREAME offers superior suction and longer dust bin capacity at a lower cost, making it better for those prioritizing raw power and budget.
Which robot has better mop cleaning and maintenance features?
DREAME uses 167F hot water to clean mop pads and the washboard effectively. Shark's base automatically washes, dries, and refills the water tank for mopping for up to 30 days, offering a more automated and self-sufficient mopping maintenance experience.
Explore Other Categories
Popular comparisons across the site
Ask AI
Get instant answers about specs
Get the Deets
Ask our AI assistant
Ask Deets anything!





















