I've been looking for a graphics card also. Someone recommended me http://www.newegg.com/Product/Product.aspx?Item=N82E16814130587&cm_re=gtx_580-_-14-130-587-_-Productcm_mmc=BAC-MaximumPC-_-BOTB-_-NA-_-NA&nm_mc=ExtBanner and http://www.newegg.com/Product/Product.aspx?Item=N82E16814161366
Is the 2nd one really worth $200 more? Or should I just go with the cheaper one?
I would go with the 580 unless you need to play the game on some insane resolution like 5048 x 1080, etc.
The GTX 580 (or even the 570) should be more than powerful enough to handle any new games over the next few years at 1920x1080 or even 1900 x 1200, including DX11, and if you want to later, you can add a second identical card.
If you plan to game on 2 or 3 HD monitors together, not sure, perhaps someone else can comment on that as I've never tried it.