Where are you guys farming for gear in terms of efficiency and number of drops?

I’m really trying to get the Luminari set and have been slamming my head into the wall on various named mobs. I am getting so much poison gear that I will never use, it’s driving me crazy. Also tons of duplicate drops – could be terrible RNG, but I’m curious if the old bug is back.

Expansion until Crucible is updated then Crucible.

The expansion just does not feel efficient to me.