Whenever the homies are ready I have them all now.
Janx
Hatorade
@cyrusreij Saved investigations for each one of them for you guys. Killed all of the tempered elders alone but Nergigante and Black Diablos last night which I cant seem to find yet.
From what I can tell you get a good amount of the T8 armor stones from the elders. Enough where I was able to unlock upgrading everything I use normally in 2 sets. I also got the weapon augment for Bow, HBG, LBG, Lances, and Insect Glaives but none I use yet. They seem semi rare though so you are guaranteed to unlock augmentations pretty much in one sitting with elder tempereds. The fucked up thing is that T6/7 armor upgrades with augmentations go up to 84-85-86 defense which is higher than what the T8's upgrade into. It really opens up the armor combo possibilities for mixed sets in the end game.
I also finally got the rocksteady mantle, its super easy being Vaal Hazak and Odogoran tempered. It will unlock after doing some of the tempered elders. The mantle actually got me killed once with its effects. You don't get any knockback from attacks or anything so you can face tank and mouth breathe easy pushing buttons.