Ill chime in here alittle bit as a couple months ago i went from a gtx295 with is a great performing card no problems at all and very easily overclockable, to my 5870 crossfire.
1. wow i have a HAF coolermaster case it boy did it get quite all the sudden when i put the 5870's in thier, not only that but my whole system runs much cooler now, big plus for me.
2. image quality, much improved over the gx295, i dont like starting fights or arguments about ati vs nvidia but i noticed a big difference on games and video image quality once i changed over, especially noticeable on my 52 inch.
Only bad thing so far is the drivers from ati, im running the so called 10.3 preview/review drivers not bad but geez nvidia definately has the upper hand on certain aspects when it comes to drivers, cuda and physx.
Just my experience
__________________
The mother ship,Coolermaster HAF, I7 intel overclock 4ghz, , 6gb mem, 5870 crossfire, soundblaster Xfi titanium , Oh and 52 inch samsung 750 120hz. 7.1 onkyo 1200 wattss system
