Dont think so, they are a little more expensive in a bang for buck capacity, but they handle AA much better (not sure about drivers these days but ATI gives me enough problems) and the OP obviously has money to spend.
Thought we were looking at Q1 2011 for high end 6*** series...
Yer ATI drivers suck seriously bad on 5970 at the moment. I get BSOD when booting my pc for the first time during the day, after a restart or two it becomes stable. I guess windows must reinstall the display adapter after the driver fails a few times, or maybe the CCC alters something

