I plan to get an nvidia card. In my place, i can get a 2nd hand(w/ warranty) palit gtx680 for $370 or a palit gtx 670 for $310 or a brand new palit gtx 770 for $420. Other brands of gtx770 ranges from $425-500. Which do you thnk is the best option? I will play sc2 at a 32" screen And some ac3 and etc. In the near future i will go to dual 20" due to work reasons. Also, There seems to be a lot of people selling their Palit gtx 680/670 jetstream . Is there an issue or problem with that brand?