What's the best GTX570,580 and HD6970 out there?

Which would you choose? I want to buy a graphics card that can future proof me for atleast 2-3 years.



Please do help me. I'm looking on MSI's 580 lightning,R6970 Lightning and ASUS' 6970 CU II



Thank you very much.|||6970 = HIS IceQ Turbo 6970 2gb



GTX 580 = ASUS Matrix GTX 580 platinum 1.5 GB



GTX 570 = 1280 mb EVGA Superclocked



or



MSI 1280MB GeForce GTX 570 Twin Frozr III Power Edition OC|||Look them up here:

http://www.videocardbenchmark.net/



GTX 580 - 3911 score

GTX 570 - 3553 score

HD 6970 - 3150 score



So GTX 580 is the best card period. That's why it's on top of the list...|||radeon hd 6970 the gtx 580 is great but the with the 6970 you will max any game out there for the next to 2-3 years