The 7900GT is about the best bang for your buck out right now. They can also be voltmodded for a drastic performance increase. However, I have heard many cases of people having problems with their 7900GT's. If this bothers you, which I wouldn't doubt, seeing as you're trying to get away from problems, ATI's closest equivalent to the 7900GT is the X1800XT. However, they are more expensive, so I still recommend the 7900GT.