3D just sounds good until you get to use it. You will enjoy it for the first week, and then you will get pissed off with it.
Even though it sounds extremely fun to watch your m4 carbine come in front of your face and bullets fly past your face. It lasts for a minimal amount of time, plus you need to have an EXTREMELY powerful rig to be able to handle 3D and high quality graphics.
Trust me, i got a 55 inch 3D tv with a ps3 and 5 3d games. I almost never play them in 3d xD but...movies are a whole new thing
So, yeah Nvidia gtx580 all the way!!