I personally am a fan of the Polaris 380. I have an 18 x 36 IG liner pool, and the Polaris can completely clean it (only occasionally getting stuck on the ladder) in 2-3 hours, unsupervised. In 7 seasons, the only thing I've had to replace is one set of wheels, one set of drive belts, and a backup valve......but my pool stays open year-round, the Polaris lives in it year-round, and I keep high chlorine levels because I intentionally run a high CYA level..so I can't complain.

Otherwise, I have a Poolbuster for quick pickups when needed, and am very satisfied so far with both cleaners.

Janet