I have the 165 and it's pretty much the same. They are pretty good BUT the bag isn't too fine so the really fine stuff goes through. You can throw in a handful of cotton balls, or the equivalent amount of sheet cotton and it will catch a lot that the bag would pass. For the really fine stuff, a suction-side cleaner catches more because it uses your filter.

You still need to brush your pool with these systems.

A robotic like an Aquabot or Blue Pearl is expensive but it filters as fine or finer than your filter, and it brushes the pool for you--but they start, even discounted, around $700. I don't recommend Dolphins as their internal motors are far smaller than Aquas or Blue Diamonds.