where do you buy from? generally the cheapest of the decent series of cards, as they all perform the same
to list a few:
Asus Dual / Strix
MSI Gaming
Gigabyte G1 (/Windforce, it's a bit coil whine prone from what I've heard)
Gainward Phoenix
Palit Gamerock / (Super)Jetstream
Inno3d iChill
EVGA SC / FTW
KFA² Galax EXOC
Zotac AMP!