[mwatt]

I have two suggestions. First, I agree with the CoM recommendation. Temple would be perfect (outside the temple). You can also do the first three mobs inside of Arena (from the left side). In these places, you can will be able to get single pulls. You will have mainly blues until around 54, but CoM has a good modifier and even the light blues give not-horrible experience.

My other recommendation is Bloodgill Goblins in Lake of Ill Omen. On the negative side, this is underwater fighting and you fairly frequently will get a two-pull, though there are spots where you can garuantee a solo pull. On the positive side, they are easy and it is truly excellent experience. You will have mainly blues until 52. However, there are folks who recommend Bloogills to 54 because even the light blues give good experience and it is fairly easy once you have mastered the ins and outs of finding where they are (seek ye the bases of the pillars in the middle of the lake) and fighting underwater.