I bought a Barracuda G3 -- a popular suction cleaner. I don't recommend it, though. Mine gets stuck too frequently on my softly rounded steps. I've used it about 3 times, choosing to just brush my pool down to the main drain once a week. Surprisingly, my pool is very clear in spite of the lack of using a cleaner. If I had the $$$, I'd probably choose a robot that was smart enough to know when it was stuck.