Hi gracelover,

I like my Polaris 380--it has 3 wheels. It does climb the pool walls, however, and when the bag is full it sometimes will sit and spin against the edge where the pool floor meets the pool walls before it tries to climb, so I'm not sure it would work for your application.

I'm sure that others will be by to offer opinions--we're full of 'em!!

Welcome to the forum!