It's nice running full shadows etc. Once I get 3 gaming monitors ("if" I ever do) I might have to dial down some of the eye candy. However testing at 3072x768 testing I was able to run a number of games offline with FRAPs and still maintain good gameplay. BFBC2, HL2:EP2, a couple others.
Only problem is 1 of my monitors is ancient, a 1024x768, and you have to dumb them all down to the same resolution. Looks like utter crap on my others, plus different sizes means different placements... Gave me a headache to game like that. Definitely need new displays.
And, then, if I really want to in the future, I can cross-fire my 6970 with another to get extra power, should games get that much more demanding in 3-5 years.