I got a BFG 6800 GT OC
I couldn't find a X800 pro/XT or a 6800 Ultra, all the test I've read showed the GT hanging with those cards so I said WTH might as well give it a try.
I have it OC'd to 6800 Ultra speed and all is fine, no glitches or heat problems. It runs all my games @1600x1200 4xAA 8xAF with every game setting to the highest smooth as silk I don't have Far Cry but Doom 3 & Pain Killer are no problem at all.
I need more time to decide if it's worth $200+ more than the ATI 9800 pro/XT......