Kurn's Tower  

Currently using my 2nd necro now at level 13 and the experience here is excellent. Although it doesn't say so on eqatlas, I beleive there to be an exp bonus - it just didn't seem like i was getting the same amount of exp in loio for killing the same whites/yellows as i do here. What's also nice is the number of mobs and range in levels. As you begin to level up you simply move upstairs or into the basement.