Of all the ATI cards out there, the one brand I'll never buy again is ASUS. After having two of their video cards die, a 3870 TOP and 4850, and the horrible RMA process (took three returns on each to finally get a working card; the 4850 ended up taking two months in total....the 3870 took 1 1/2 months; both took talking directly to their Level 3 support), I'll never purchase one of theirs again.
If you want to hear the complete sordid stories on both, let me know.....but be aware, ASUS's first RMA cycle for video cards is to just visually inspect the card for obvious damage, if none seen then rebox it and return it. This was admitted by the L3 tech.....supposedly done to weed out the RMA's simply done because of poor OC's and crap.
Their motherboards, on the other hand, have always done well for me, along with the rare RMA I've done with them with a failed mb.