Which is better??

Well, I plan to crossfire two 5770s. Those aren't exactly "high end". But will biostar still do better with crossfire over all? and how trustworthy are biostar products?????
 
Hm.... if that's the case. It's really a toss-up between Gigabyte and Biostar since Gigabyte has USB 3.0 which the biostar lacks. Thanks a bunch for your assistance =)
 
@Saint19 The onboard video can easily be disabled and the motherboard will forget about it until you manually select it for use...Correct me if I'm wrong though...