Rank up dilemma. Post Act 7.3

Adv

I have finished 7.3 yet to explore act 6&7. Yet to explore V1,2 and 5. I am confused between ranking up
Guardian
Havok
CMM
hit monkey
Tigra

All are Unduped. I have attached my roster for reference.

ChaosMax1012

Tigra or guardian. However i would definitely give wasp a try.