Ferrott ~ Start off by following right wall, look for groups of arrow down lizard men. Can waste through them pretty fast.. There are heroic sets so watch your step. Explore further once you get comfy.
Enchanted lands ~ Far north. Lots of groups of lamia's and such. You will want to explore. While there check out Runyeye, dungon bonus on exp, and there are groups of mobs that are non heroic.
If you have DoF, you should check out sinking sands. There are lots of grouped mobs arrow down around 45 to 46, if you have a solid soling tactic down you will rake exp there. Croc's in the caves, or follow path up above to the high ridge area, lots of group encounters around there too. If you follow that same path above and follow the left wall it will lead you to a zone called Clefts of 'something' nice solo area on the first level there, several named mobs, lots of fun. Might want a level or two, but check out you never know)