Help me choose
Our pick: Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman adds wall climbing and scrubbing. Dolphin Cayman includes a large-debris bin or bag for leaves.
Max-Series
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
Polaris
Polaris 9300 Sport Pool Cleaner F9300
Pools that need floor cleaning.
Why Dolphin Cayman is our pick
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
$1,079
Buy Dolphin CaymanDolphin Cayman or Polaris 9300 Sport Pool Cleaner F9300: our take
Dolphin Cayman and Polaris 9300 Sport Pool Cleaner F9300 are compared on pool fit, cleaning reach, debris handling, controls and ownership details. The recommendation is based on the job the robot must do—not a simple feature count.
Pool fit and cleaning reach
Dolphin Cayman has a published maximum pool length of 40 ft; the other model does not have a verified length in our source material. Dolphin Cayman cleans floor and walls; Polaris 9300 Sport Pool Cleaner F9300 cleans floor. Dolphin Cayman's documented cleaning system includes 1 active brush, SmartNav 2.0 navigation, and Dual 24-volt DC motors.
Filtration and debris
Dolphin Cayman has documented included filtration—MaxBin—while the other model's included media is not fully published. Dolphin Cayman also has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Cayman provides a weekly timer and power-supply controls; Polaris 9300 Sport Pool Cleaner F9300 provides daily scheduling. Dolphin Cayman uses a 50 ft corded cable, while Polaris 9300 Sport Pool Cleaner F9300 uses a 60 ft corded cable. Dolphin Cayman is listed at 14.6 lb versus 18 lb for Polaris 9300 Sport Pool Cleaner F9300; that 3.4000000000000004 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Cayman is listed at $1,079 and Polaris 9300 Sport Pool Cleaner F9300 at $1,393.60; Dolphin Cayman is $314.60 less. Pool Express pick: Dolphin Cayman. Dolphin Cayman adds wall climbing and scrubbing. Dolphin Cayman includes a large-debris bin or bag for leaves. Choose Polaris 9300 Sport Pool Cleaner F9300 when it is the better fit for pools that need floor cleaning.
Feature check: what each robot actually has
A green check means the feature is documented as included. A red X means it is documented as absent. A dash means the source does not make the feature clear.
| Feature | Dolphin Cayman | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| Scrubs the waterline | No | No |
| Fine-debris filter included | No | No |
| Large-debris filter | YesEdge | No |
| Automatic scheduling | Yes | Yes |
| Smartphone app | No | Not listed |
| Anti-tangle swivel | No | Not listed |
| 3-year warranty | No | Not listed |
| No recharging between cycles | Yes | Yes |
| Built-in UV-C water treatment | No | No |
Unknown is not treated as “no.” Specifications come from the product pages, current catalog records and manufacturer material collected for this site.
Where Dolphin Cayman stands out
Dolphin Cayman is the better fit for shoppers prioritizing the lower $1,079 starting price.
- Adds wall climbing and scrubbing
- Includes a large-debris bin or bag for leaves
- Can start on a weekly schedule without a manual launch before every cycle
- Is listed $314.60 lower
Where Polaris 9300 Sport Pool Cleaner F9300 stands out
Polaris 9300 Sport Pool Cleaner F9300 is the better fit for pools that need floor cleaning.
- Cleans the pool floor
- 60 ft cable
Dolphin Cayman vs Polaris 9300 Sport Pool Cleaner F9300 specifications
Use pool fit first. Price and app control do not make up for a robot that cannot cover the length or surfaces you need cleaned.
| Specification | Dolphin Cayman | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| Best fit | Inground and above-ground pools up to 40 ft that need floor and wall cleaning. | Pools that need floor cleaning. |
| Starting price | $1,079 | $1,393.60 |
| Pool type | Inground, Above-ground | Not listed |
| Maximum pool length | Up to 40 ft | Not listed |
| Cleaning coverage | Floor, Walls | Floor |
| Power | Corded | Corded |
| Filtration | MaxBin | Not listed |
| Scheduling | Weekly schedule | Daily schedule |
| App and remote | Power-supply controls | Not listed |
| Cable | 50 ft | 60 ft |
| Robot weight | 14.6 lb | 18 lb |
| Warranty | 2 years | Not listed |
Choose Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman adds wall climbing and scrubbing. Dolphin Cayman includes a large-debris bin or bag for leaves.
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