To the point of pally's, I had a level 63 paladin a while back that I left when I and my friends switched back to horde. The way I had the most fun playing her was as protection, I imagine depending on what your booster is that is still a good way to go. If you have a healer, I would recommend it.

Protection pallies aoe grind, so you would want to get yourself a shield spike, slap on ret aura, work your way to holy shield and blessing of sanctuary. Then grab yourself a slew of mobs and grind them out. This works solo, mind you, but with a healer behind you you could really push the limits on it.