Soldato
if crossfire(your 5770) is more likely then get a board that is proper crossfire ready(8x/8x) and if not just ditch your 5770 and go for a gtx470 or hd5870
I've been looking at different motherboards but i'm getting more and more confused by them.
i would probably go for CM 430/antec 300 or akasa xone
but it depends if you liek that case.