Time to upgrade video

I've taken a break from boxing, Cata+IRL has really put a hurting on me lately, I think I want to try starting over with the developments with ISBoxer and the mild nerfs.

Currently I have a BFG GTX 280OC as the primary card and an 8800GT for the 3rd monitor.

I'd really like to go to a single card if possible. The rub is that my left and right monitors only run at 1680 x 1050, my center monitor runs at 2048x1156 (which I absolutely love).

Is this an issue at all with the eyefinity cards? I don't require the unified desktop of eyefinity, just the single video card capabilities (and DX11 or course).

Can anyone recommend an eyefinity card that's comparable or better to the 280gtx I have now? I'm in no rush, the 280gtx still runs everything like a raped ape, but it's getting a little old - time for DX11 goodness.

Thanks in advance.