Dolphin Sigma vs Polaris VRX iQ+
Both clean the same surfaces. At about $2,999 and $1,499, the table below is where the difference in price has to be found.

Dolphin
Dolphin Sigma
~$2,999
- Pool fit
- No cable length published
- Filtration
- No micron figure published
- Retrieval
- You fish out 24.6 lb
Maytronics' dearest residential corded robot on its US store.
Best for: Buyers paying for Maytronics' longest warranty on an app-controlled corded robot

Polaris
Polaris VRX iQ+
~$1,499
- Pool fit
- ~62 ft70 ft cable − 8 ft to reach the bottom of the deep end
- Filtration
- No micron figure published
- Retrieval
- Parks for pickup
Polaris' flagship corded robot runs a SMART cycle that sizes up the pool and sets its own cleaning time, reports to the iAquaLink app, and climbs to the waterline at the touch of a button so it can be lifted out already draining.
Best for: Large in-ground pools where the owner wants to press a button and lift, not fish
| Specification | Dolphin Sigma | Polaris VRX iQ+ |
|---|---|---|
| Approx. price | ~$2,999 | ~$1,499 |
| Type | Corded waterline | Corded waterline |
| Power | Corded | Corded, 70 ft cable |
| Cleans | Floor, walls, waterline | Floor, walls, waterline |
| Pool fit | not published | ~62 ft |
| Maker's pool claim | 50 ft | not published |
| Cable length | not published | 70 ft |
| Default cycle | 150 min | not published |
| Filter | Fine filter kit, plus an ultra-fine kit in the box | 5 L illuminated canister |
| Basket | not published | 5 L |
| Weight | 24.6 lb | not published |
| Retrieval | You fish out 24.6 lb | Parks for pickup |
| Self-parking | not published | Yes |
| App control | Yes | Yes |
| Caddy or dock | not published | Included |
| Pool types | in-ground | in-ground |
| Warranty | 3 years | not published |
| Cost per swim season | $1,000 floor | not published |
Dolphin Sigma: what it gives up
- The most expensive corded robot in the catalog
- Published weight, suction and dimensions match the $1,349 CC Supreme's; the gap is warranty and brushes
- 24.6 lb, tied with the CC Supreme as the heaviest corded Dolphin
- No filter-full light, which the cheaper Premier and Explorer E50 both have
- No caddy is listed in the box at this price
Polaris VRX iQ+: what it gives up
- Polaris publishes no weight, maximum pool size or micron figure for it
- No per-model warranty term on Polaris' page
- $1,499 in Polaris' rebate terms, $350 more than the EPIC 8642 iQ
- In-ground only, like every Polaris in the catalog
Full specifications: Dolphin Sigma · Polaris VRX iQ+