While Nvidia may have bigger resources for driver support they seem to break stuff often with new drivers too so it's not like Nvidia is like free from bugs either. For example ever since 19x.xxx drivers I've had alt-tab issues with some games, especially UT3, clocks get stuck in 2D mode or otherwise you just get very poor performance after an alt-tab or two (like 250 fps drops to 40-70 fps, not that I play with 250 fps but constant 120 fps rather) and you have to reboot to get back the FPS, highly annoying, currently on 259.32 beta and the issue still persists, might as well go back to 182.47 driver soon cuz that one worked without issues...

Speaking of drivers, does any1 know if ATI supports 120Hz in non-native res yet in latest catalyst? This is such an important thing for me using a 120Hz LCD, I'd gladly pick an ATI card but since I've heard it seems like it's not working with 120Hz in non-native res I've sticked to Nvidia so far cuz 120Hz support is better.