Just got nerfed... As I was doing it. Belial gave ~44k, while the quest turn in after him gave another ~44k, and the act4 1st boss gave ~25k. Now Blial gives ~9k, there is no xp for the quest turn in after him and the act 4 1st boss still gives ~25k.
Hell Ponies is the best Xp at the moment for 50+. You get over 30% of a level in 1 run from 50-56 . After that you get about 20% of a lvl for the last few.
Watch the video.
Remember you need to be level 50+ in order to do this.
And any class can do this.
Set to Nightmare.
Kill Act 3 last boss.
Kill Act 4 first boss.
Repeat.
Gold Find %
Set to Nightmare.
Kill Act 3 last boss.
Kill Act 4 first boss.
Repeat.
You can always do this on ur second character or something like that if you dont want to miss the story.
You want math?
A3 + A4 = xp/h (*)
A3 = xp/h (**)
Insert (**) in (*):
=> A3 + A4 = A3
=> A4 = 0
Ehm, sorry, couldn't help myself...