What graphics card should i buy? Gtx580 or gtx460 2Win?

I was gonna get a gtx 580 for my new rig, but yesterday, EVGA announced their monster 460 dual GPU card, "460 2WIN" This card gives comparatively better frame rates than the 580 and is extremely cheap (it would be 2X 460's price - 10%) about 45 - 50 USD less.



But i'm not sure whether to get this or the 580 .



please advise me on this.

thanks

-Shanike-|||benchmarks say the 460 2win is the way to go and at a cheaper price seems like there's an obvious choice