XP is way up.. I quested to get me to Stockades.. ran that over and over, grabbed some candy buckets, did Scarlet monastery till it went green.. ran Scholomance over and over, then did Strat each side x1.. came out of there and went to Swamp of sorrows dungeon x1.. and came out of that at level 60.. was insane. I am on raf and have loom cloak and helm on all 5... plus the 10% from the wikerman buff outside Stormwind. The completion bonus, plus bonus kill objectives are very nice.

All are same level, so not boosted by a main... 4 hunters with holy nova spam priest it flew by... now I'm in Outlands - don't think I will be there long.
Usually I would have to do a bit of questing - especially in Blasted Lands just to get me high enough to go to Outlands.