im looking at buying a new GPU soon, and im unsure what the bast option for me is. i will be running eyefinity at 3840x1024, so 2gb is a must. my budget will be close to (preferably below) $300 US. I had my eye on a HD6950 2GB, but with the release of the 7000 series im unsure, the 7850 looks viable as well, keeping in mind it will only increase in performance with future drivers and potential Over Clocking. i would primarily play games like skyrim, batman Arkham city, CoD, and bf3 and i want to keep a good fps at decent settings, what do?
running at that resolution I can't imagine you have something much weaker than what you want to upgrade to. other system specs would be handy to make a good recommendation.
all in all, i would get a 7850 over a 6950 for the same reasons you mentioned. but im not convinced it would be much of an upgrade for you. at that res you really would be better with a 7950, but it all depends on if you can save a little longer and get it.