Nothing wrong with console gaming. I own all three, and only consoles have the full-band GH/RB games or DJ Hero.
If you want three screens today, then Eyefinity is the way to go (I'd go with the 5870 versus the 5970). I don't think that the GTX260 is going to give you the performance you want in three screens in SoftTH (having tested the GTX275 and GTX295), and you can't use SLI in SoftTH.
If you want to wait to see how the NV solution is going to pan out, then you might pick up a 2nd GTX260 at that time. Also, that will allow you to see how the NV solution works vs. Eyefinity. And, by then the Eyefinity6 card from ATI might be out as well by then.
Thanks for the advice Ibrin, after some more eyefinity research I'm wondering if it would be worth waiting for the 5870 2gb cards to appear, or should I just get a 5870 1gb card now?
I hope I didn't offend anyone with the console comment, I should have mentioned I only play race sims and they seem to be night and day in difference.
Dice.