Warlock Affliction Leveling Video

If there was any doubt whatsoever about why I recommend leveling as Affliction, let this video clear it up.  This guy is grinding on 5 mobs at a time in Tanaris and getting 120K XP per hour.  Absolutely amazing.

Think you can do that as Demonology? What about Destruction? Nope. Affliction all the way baby.