Multimonitor gaming all the way. Could use a much better card for this reason alone.
Besides, maybe if enough of us have multi display setups, game developers would stop being so lazy and actually code for them. (I'm looking at you MW3)
I would like the 560 because I would give to my brother as a xmas gift so he could play bf3 with me. His current system is outdated and this would make him happy.