I've not finished reading the VR Zone review completely - it's really slow to load (and they jumped the gun on it, too - the NDA expires tomorrow!) - but so far my opinion is that the X2900XT is a pretty capable card. As soon as ATi... sorry, AMD... get some of the driver AA issues sorted (in some games, the framerate is appalling) it'll be a pretty damned good card. And at the price point it's at, quite an attractive option. Pity about the heat, but it really doesn't seem much worse than an 8800GTX or X1950XTX...
Yeah, hopefully there is a better driver tomorrow and THEN some reviews for hi-res, high aa/af comparisons :)