Seems pretty sweet so far. It's really not that loud either. But our tank is in the living room so there is always white noise from the TV and stuff anyways. I'm not having much luck on settings though. At least as far as what kind of flow (constant, gyre, random, etc) what %'s etc, people are using. Seems like I'm going to have to just experiment with it. I'm about to do the air bubble test and see if I have dead zones.
I tell you what, the fish (especially our chromis) seem to love the gyre flow lol. They keep going back and forth swimming into the current.