X800GTO is nice. X1600Pro would be better for a media center though.
http://www.newegg.com/Product/Product.asp?Item=N82E16814131430
Second will it work with direct x 10 when it comes ?
No. There is no card on the market that is DX 10 compliant, or at least none that I know of.
from what I've heard the 6800XT is crap. it won't unlock or overclock well. I'd go for the X800 from ati.com in the clearence section. the only thing is u don't get sm3