Hey Nighthawk
Right now im using a booster and my 4 ret pally team just hit 35 in 12 hrs played
my problem was just standing around WAY too much once I fgured out what I could and couldnt get away with (how far I could be ect) things really started to pick up for me As someone elese mentioned a problem is having to wait for the instance to reset so to combat that I just said screw it and ran SM cath armory and the other one not graveyard though. I figured some xp was better than no xp. This team isnt being lvled with RAF which kind of sucks but meh ill get over it. But obviously if your doing quests its going to be much slower than if you were boosting via an instance. I mean 1 cath pull nets 40% xp for less than 8min of work. But hang in there and use that Prot pally to boost via instances imho.