Have you considered the 6800GS? It just came out, but Newegg has currently has one from eVGA for $209. I'm not sure what your budget is, but if you can swing the extra $50 to get the 6800GS, I'd go for it. The performance is close to that of a 6800GT, so it will smoke a 6600GT for not a lot more money. Heck, the BFG 6600GTs are almost the same price, but perform a lot worse.