When the PoolBuster works, you'll think it's the best thing since sliced bread. But the batteries can fail very quickly and the battery/motor must be replaced as a unit. I had to do it after the warranty ran out and it cost about $80, on a $200 unit. But since then it's been better than ever.

Also be sure to order the finer-mesh filter--I don't know why the unit wasn't sold with that in the first place--it makes it an all-purpose vacuum. I haven't had my suction side vacuum out of the basement in 3 years between that and my Blue Diamond.