Dear Ownedcore,
I recently started using my own way of using a quest to farm quick experience and decent drops in act 2.
Go to act 2 , part 8 and then click on the black soulstone (confront zoltun kulle).
Run into the portal, kill him + adds. Collect 37k quest exp+ drops and xp from mobs = around 40k every 2 minutes or so. THis is for Nightmare values
Hope you enjoy it
<3 Diablo 3