Polaris 65 is one of the ones I have. It works well to pick up big stuff in the spring (spring blossoms, helicopters from the maple trees) and then in the fall (falling leaves) but doesn't do well with dirt even with cotton balls in the bag, although that does help some. The tail swooshing around mostly just gets the dirt/dust into the suspension of the water. I typically use my Polaris 65 when opening the pool and then when the leaves start falling late in the season. But, for most of the rest of the season, I either vacuum manually or use my Wanda the Whale vac. Just my $0.02.