Despite using Biostar myself, I have to agree with Emperus that ASRock is the better option here due to its reliability and above mentioned features.
The only thing more assuring from Biostar is the warranty length. Other than that, I wouldn't count on it.
FYI, I use Biostar because it's cheaper than similar spec'd product from other brands ($15 cheaper at that moment). With the same price tag and features, I would go for the other brand. Sorry, Biostar... :P