I bought the Pool Buster Max this week and so far love it. The regular filter bag was letting to much sand and fine silt pass thru so I purchased the finer sand filter bag.

My only complaint is that these things are pricey and they all should come with the sand filter bag. Twenty five to thirty dollars for a piece of material stitched to a rubber/plastic/vinyl lip is to much. It probably cost about a buck to make. They advertise that the product as sold will pick up fine sand. Not so without the optional sand filter bag.