Corsair, Antec, and Seasonic are all really good brands. Anything like 500W would be good from those manufacturers.
Should I get 600W just to be safe if I want to upgrade again later? And at what gpu would my cpu start bottlenecking my gpu a lot? Also if I get a 7770 with the A8, how would it compare with getting a 965 BE with 7770. Would there be a whole big difference or just a tinsy difference? I want to know this because I want to see if I'm losing a lot of performance and paying the same when I could've went the phenom build.