
Dolphin Advantage Ultra
Score: 73/100
Aiper Surfer S2
Score: 70/100Rankings

The Dolphin Advantage Ultra offers solid floor, wall, and waterline cleaning with a lightweight, plug-and-play design and 4,000 GPH suction. It lacks advanced filtration and smart app features, limiting its appeal to tech-savvy users. Ideal for pools up to 50 ft seeking simplicity and ease of handling.

The Aiper Surfer S2 combines solar charging with app-based scheduling, delivering up to 35 hours of operation and fine 150 µm filtration. Its bulkier build and modest propulsion make it slower than competing models. Suited for users who value hands-free, continuous surface cleaning and solar autonomy.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 35 hoursbest | |
— | 150 µmbest | |
| ↓ lower better | 8.39 kg | 5.715 kgbest |
— | 4 Lbest | |
— | 3 itemsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Build & Design(2) | ||
Weight (kg) | 8.39 kg | 5.715 kg |
Dimensions (L×W×H) | 56.4×44.7×32.5 cm | 41.4×20.1×54.0 cm |


Products in the top-left offer the best value (high score, low price).

Professional reviewers consider the Advantage ULTRA a solid, mid-price option that delivers reliable floor, wall, and waterline cleaning while remaining lightweight and easy to service. They commend its plug-and-play simplicity and effective dual-brush system, but consistently note the missing NanoFilter technology and limited suction as drawbacks compared with higher-end Dolphin models.

Reviewers commend the Surfer S2 for its comprehensive cleaning suite-150 μm filtration, a generous 4 L basket, DebrisGuard™ and SolarSeeker™-and its convenient app control. However, they consistently point out that the robot feels chunky and under-powered, with 2.5-inch propellers struggling to move the heavier chassis, making it slower than competing models.
While formal consumer reviews are scarce, the limited Q&A data shows users are pleased with the fine-level filtration and strong suction port, and no major complaints have surfaced in the available sources.