This has got to be the most changing build in history.
Go with the second one and just add a second 6950/570 when you need to.
I'd say that's the best build. Told you it'd be worth it to go for a 2600k with this price range moreso than just the 2500k. Not much difference but as a whole the computer industry is moving towards utilizing more cores, so the more the merrier.
It's spelled GAYMEN
... why arent you using AMD?
Intelvi5/i7 is like three times faster. Check benchmarks
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103913 you were saying?