clive
well XD is getting there but its nowhere even close to the 4gb compact flash cards that are out now.
another thing is that complact flash is used in more brands then anything else(canon,nikon, fuji, etc) and in more cameras. it is the defacto standard for a majority of the cameras , and most importantly the pro cams only use CF cards.
the XD card is nice because its small forthe new palm size cams, but its only supported by two manufactures (oly and fuji) so the exposure is limited and they cost more (sort of like sd and mmc cards)
FWIW