For best exp try Grim Reapers Darashia/Yalahar, Dragon Lords PoI/Fenrock, Frost dragons Okolnir, Minotaurs Oramond, Rathleton Severs or search teamhunts.
For best profit Roshamuul's Bridge, Ghastly dragons Wote, Lizard Chosens Muggy Plains/Corrupted Hole, Demons Yalahar, Dark Torturers Catacombs