Pre-14: Melee.
14-59: Root-dot. Unless you have great gear, in which case you can melee for a while at low levels, but root-dotting will still win out by 30 or 40 in terms of efficiency. I've tried various methods of EXPing (though I never had uber gear) and root-dotting always gets the job done fastest in terms of raw EXP per hour.
60: Melee with Torpor.
There are obviously some tweaks here and there. Canni+regen comes along and gives you a nice boost in efficiency. Your pet comes along and gives you a little extra DPS and CC. With your epic, you get way more efficient. JBB and fungi help a lot too if you happen to be sitting on a mountain of platinum.
|