up to lvl 80 i would make all the dk's blood. It takes a few sec longer to kill some mobs, but you won't get slammed trying to heal in those OHSHIT moments. at lvl 80 your gonna have to quest most of hyjal anyway to get your ilvl up high enough to be able to que anyway. but i done nothing but dungeons up to that point, and i gotta say they were cake. And beleive it or not, i still had some of the starter gear left by the time i got to violet hold. (finally broke down and got them some heirlooms) gonna finish them up this week hopefully i've been focusing on my mages too much, i gotta show my other teams some love, lol