" Plus if you get 1 8800GTS and aren't happy with its performance, you could always SLI that." LOL R U treating?
No, but think about it. If 1 high-end gives you as good or better performance than 2 mid levels, your upgrade path is still open. You may not have the funds now, but in 6 months you probably would and you can boost your performance even more at that point.