Just go for the 2 GTX260 SLI or 4890 crossfire. If you have the need upgrade wait for this summer when they release better cards. Ati's 5800 or nvidia's 300 cards should be very promising.
id go with tipmans suggestion. 4890s crossfired and overclocked to 1ghz(if you get a couple good ones) would make a hell of a machine. i contemplated selling my 295 for this option but the gain would be negligable.
Message edited by xblackjackx on 04-18-2009 at 07:15:32 PM