I should be buying some new wheels today but I don't actually know what rims to go for yet. Will be used on a hardtail that I intend to ride a bit of everything on - trail centres, DH at Woburn, dirt jumps and maybe a bit of local xc (if it ever dries up and gets fast enough to bother with)! So I probably don't need something as heavy duty as the 721s on my DH bike but would still like some strength so I'm not always worried about the wheels breaking or anything. So I guess I'm looking at the "all mountain" category?
EN521s maybe? I'll be ordering from superstar so need to be able to get it from there, they have a fairly good selection