If you only use nvidia i'd wait until they release their DX11 cards.
Have never used anything but Nvidia . Have always been told to stay away from ATI because of driver issues, and I only play wow and COD 4 . I want to be able to play at max settings.
If you only use nvidia i'd wait until they release their DX11 cards.
HD5850 or an ATI4890 is what i would pick