I find it so much more fun to just play a team via RDF..all monks can have tank..healer and 3 dps. so you can queue for randoms. I started a team of tank..healer and 3 hunters yesterday and they are 52 so far. All through RDF after lvl 15.Boosting might be a tad faster, but its more fun playing the toons like you would normally and the levels still fly!