hi Nick,
What do you want the sail for? ...freestyle? and what size are you after?
If you do want it for freestyle it is the perfect sail as it has a shorter boom and is easier to flick around!
But in saying that i haven't really used my XD's much so far... apart from a few times in the waves when i first got them. (Which they felt nice in)
I have used the crossover alot which is an awesome sail for everything wave/freestyle and blasting and wouldn't go far wrong by going for the crossover.
it's a difficult desciion but with either sail I think you'd be happy!
hope that helps!!
cheers
Ben
www.thewetdream.co.uk
Fanatic, Simmer, Da kine, Mambo, funsport, boardseeker.com