The 5th bough is a good area (I think it's the 5th, maybe it was the 4th.) It's the one where you can't use magic inside, and leads to the 7th bough. There are lots of monsters in there that respawn very quickly!!!Another good area is the swamp. Lots of nasty things to fight there. Just keep your auto search on. Monsters tend to find you more frequently when you do.