In reply to mcgowancraig:
i have one 30L. it's been used for cragging, ice climbing, mountaineering, mountain marathoning & skiing.
fairly robust. heavier than some packs in its class but strips down well.
not too many unecessary frills.
2 axe loops. bladder pocket. lid pocket. side compression straps work well to stabilise a half empty pack whilst climbing.
the outdoorshop.com were doing it at a silly cheap price recently.