Sorc stack shields. And we have a CC(Encase). And can apparently be quite awesome. I've been trying to tank with my sorc but I'm still experimenting(which doesn't mean I can't tank al vet dungeons including vCOA with my current setups, mind you). Lack of selfheals kinda sucks but there're ways around I suppose. But if you want easy tanking, yeah, don't go sorc:/ Can't say much about NB because it's only class I never played.