Thanks Dan. As far as bc fit and tank movement go, I imagine most newer divers who don't own their own gear probably have no conception of how much the tank is moving or how well the bc fits until they experience something else. I had that moment when I bought mine; in the store I realized how badly the rentals had fit me even though I had thought they were fine, the first dive with it I realized how badly out of trim I'd been with rentals. It's an extension of me and the only thing that moves is the air in the wing - I could dive with a rental if I had to, but I wouldn't if given the choice. It's classified as a "travel bc", but maybe I just got lucky (and it appears as though they got the rear OPVs figured out). If a diver hasn't experience something better, then I agree with you that rentals are the way to go.