Have tried a couple, DMM Renegade and Ms Spanners' old Petzl.
Both fine, the DMM a bit stiffer but much more supportive. Think it would be more comfortable on longer climbs.
Joe Brown's just try and sell me whatever they have on sale and my local outdoors shops just try and sell me the most expensive one!
Leaning toward the DMM, but anything else I should be considering?