You have GTX 580 SC in SLI....you are a gamer...you will be cranking out very high fps (80+ in most modern games)......def. get a 120hz...no brainer imo (unless you are heavy into photography/photo editing).
Get the Samsung S23A750 (overall best 120hz monitor imo; glossy screen) if you have a displayport on your GTX 580 (i think you should). It's $399 right now: http://www.buy.com/prod/samsung-sync...223430190.html
If you don't have a displayport on your graphic card get the S23A950 (normally $450). If you're budget is $550+..and you want a 27" get either the S27A750 or S27A950
If you don't want to spend more than $300 or so..get the Asus VG236HE (glossy screen). If you don't like glossy screens..get the Planar SA2311W (matted screen), which is also about $300.
FYI - this is coming from an IPS owner (HP zr24w), but I only have 1xGTX 570 (im not normally going to get 60+ fps on modern games)...currently thinking of picking out a S23A750 for dual monitors...even though it would be most beneficial for me to have SLI...but im anti-SLI. lol...catch 22.. I want 120hz..but I don't want SLI/CF.
/end of thread.Edited by malikq86 - 10/25/11 at 4:09pm