good suggestion about the antec version of that seasonic psu. Never used them before, but the review seems to put it at pretty solid, and it's currently $20 bucks cheaper than the xfx on newegg.
I think I'm pretty much leaning toward 5770 atm, but I still might give it a few weeks to mull over. I'm thinking about ordering my cpu/mobo/psu/ram this week though. So I wouldn't be adverse to you keeping your ear to the ground for some 5770 deals