For the monster missoin, Zebuxoruk's pact you can get 3 loots. One armor piece or two different augs. Kotiz's Empowering Essence or Kotiz's Essence of demise.

I'm wondering is there some way to pick which aug drops, either the demise or the empowering. I was thinking it might have something to do with the lvl of the group. Anyone know about this?