Polaris VRX iQ+
#10 in CordedFull review
Polaris’s top corded robot, for big in-ground pools whose owners want app modes and an easy lift-out.
Leslie's $1,499 Walmart $1,499$1,499
The Polaris VRX iQ+ and the Dolphin S400 are evenly matched, rated 3.7 and 3.6. The Polaris VRX iQ+ costs $285 less ($1,499 vs $1,784).
Dolphin S400
#12 in CordedFull review
A fully equipped dealer-line robot for large pools, though the Explorer E50 offers similar features for less.
Leslie's $1,784$1,784
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every corded robotic pool cleaner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Polaris VRX iQ+ | Dolphin S400 |
|---|---|---|
| Overall rating | 3.7/5 | 3.6/5 |
| Value 25% | 22 $1,499 | 15 $1,784 |
| Cleaning 25% | 85 Floor, walls and waterline | 85 Floor, walls and waterline |
| Navigation 15% | 50 Sensor-based | 50 navigation not published (neutral score used) |
| Warranty 15% | 50 2-year warranty | 50 2-year warranty |
| Pool size 10% | 100 pools up to 60 ft long (about 1,800 sq ft) | 100 pools up to 50 ft long (about 1,250 sq ft) |
| Features 10% | 100 4 of 4 | 100 4 of 4 |
Specifications
| Polaris VRX iQ+ | Dolphin S400 | |
|---|---|---|
| Pool | ||
| Pool size (rated) | Up to 60 ft long | Up to 50 ft long |
| Pool types | In-ground | In-ground and above-ground |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor, walls and waterline |
| Surface skimming | No | No |
| Filter | 5 L illuminated canister with dirty-canister indicator | Multi-Layer, top access |
| Filter capacity | 5 L | - |
| Water flow | - | 4,000 gal/h |
| Power | ||
| Power | Corded, 70 ft cable | Corded |
| Run time | - | Longest cycle 2 h 30 min |
| Swivel cable | Yes | Yes |
| Navigation & app | ||
| Navigation | Sensor-based | - |
| App | Yes | Yes |
| Connectivity | Wi-Fi | - |
| Scheduling | Yes | Yes |
| Retrieval | Easy Lift: climbs to the waterline and expels water for pickup | - |
| Caddy included | Yes | Yes |
| Build | ||
| Weight | - | 18.5 lb (8.4 kg) |
| Warranty | 2 years | 2 years |