I build gaming rigs for a living, i have custom built hundreds of rigs to meet the customers requirements with all manner of SLI and Crossfire setups, I personally use 2 8800GTX cards in SLI and they are superb, however i have to say that i always thought that IL2 looked better on ATI cards regardless of performance they just simply seem to render IL2 better than Nvidia cards. I cannot really speak for any other games, but if ATi have produced a fast card with good drivers then i feel it will have the edge (looks wise) over Nvidia at this moment in time.