X800xl is a better deal in terms of price.. you can save almost 4-5k on the card as the performance difference isn`t much in most games. though the 6800 gt does outperform the x800xl in some games but that diff is much to write about either..
@john the ultimate - ya 400 watts powersupply would be good enough for the card(if you overclock then you might wanna consider 450)
@anil thomas - gainward is the best(followed by gigabyte and xfx)...
