diablo 3 best way to farm forgotten souls

So I think Forgotten Souls should not be the deciding factor, but rather what classes you have, if you have keys, and if you want materials or XP. Doing GR70s with multishot at around 2-3 minute clears. I usually do 100 bountymats and 1000 souls, that way all the GRs might actually drop something nice before you reroll. And low GRs are much, much, much better for paragon (order of magnitude better). Depending on how much time you are playing, you can start off by doing a few bounty runs, then a bunch of speed grs. That being said, Forgotten Souls are rarely the bottle neck - blue mats, white mats, even Death Breath is what I'm running out of. Another advantage of T6 is that you don't need to farm trial keys/low level keys (or don't need an 'opener' if you want to leech and re-use one key), and you can run almost any class and lots of builds (whereas for low GRs you really want nothing but monk+barb+2DH). I don't have actual numbers, but it's my subjective feeling.

But you are more often close to 1M which make it inferior to AH item flipping in my opinion. Depending on you build, magic find and luck, you should be between 1M and 10M per hour with this technique. Full T6 clears can sometimes net you with 10-15 legendaries per run, especially if you get some goblins. Farming act 3 with a WW barb is the main method of wealth farming of Kripparian. I sometimes get 1-2, or even in rare cases zero legendaries from a GR35 clear, plus the rifts are so fast that you spend a significant amount of time waiting for the rift timer. I still think T6 full clears are the best for Forgotten Souls. We've done some speed GRs (~35 in an average of 2.5 minutes, everything between 1:40 and 4:20 to completion).

Diablo 3 best way to farm forgotten souls