Basically this, I had the most fun in Lower, LDW HM is always fun, and Marrowgar is okay, seeing my insane health (200k ) on gunship trash, and saurfang is fun if I get to charge/bash beasts.
Putricide/BQL/Sindragosa are all fun, but Fester/Rot/Valith (for me anyway, since I never get any spawns on my side)/BPC are meh.