You have a great older card and if it is working well in all the games and resolution you currently play at then it would be prudent to wait a little longer. It is nicely matched to your opty in reality as they are both about the same generational technology. There will be new offerings from Nvidia and ATI and the 8800GTX is sure to come down. Nobody knows what demands the unreleased DX10 will place on GPUs. (Although my guess is that they will ultimately be less demanding than expected for awhile so they can be marketed to the masses.) The 8800GTX would be my choice, at a minimum, and I say that because I have a 8800 GTS 640, 7900 GT, and 7900GS operating on 22" and 19" LCDs. The real world use difference is minimal at best and the GTS won't give you any bragging rights.