[Messianic]

Stay in Kurns as long as you can with 10-slot containers. You'll build such a cache of bone chips you may *never* run out.

Other than that, my Necro (now 44, I play him seldom) spent basically 34-44 in OT. Yeah, it's not as fast as other areas in terms of raw leveling speed (i.e. if you're skilled enough at managing your pet in a dungeon on barely blue mobs). But it's really easy and you have a crapton of room to fear kite.

EDIT: Oh, and you have a shot with enough kills of snagging a solist's wand, which could net you easily 1.5-2k. I seem to see a glut of people trying to sell them for 2.5-3k.