I'd definitely get that X800 over the nvidia, but it bugs me on one thing though. I'd rather have the X800 with a DVI, VGA and S-Video out like my current Radeon 9800 Pro Retail. I have a VGA monitor (long live the 17 inch studio display) and I use S-Video for mirroring to a tv tuner so I can record video games off the G5.
So if I wanted the same setup, VGA monitor, and S-Video out going, I'd need a DVI-VGA (thats no problem) and ADC-DVI-S-Video (or DVI-S-Video, and ADC-DVI?-VGA)? Would that even WORK?
I really hope ATi puts out a version with DVI/S-Video/VGA...but I doubt it will happen.