Alright, alright, alright
Im currently in the wonderful position of being able to r4 one of several champs - all quite good options. My next main goal in game is completion of act 6.1, but is currently struggeling with Sentinel 6.1.2.
So whom should i r4 or should I just wait for 2 more alphas and r5 my CAIW (first r5)?

On a side note: my inventory is full of skill tier 4 catalyst, so Winter Soldier is one of my top options, while Quake, Ghost Rider (his immunity), Sentinel and Domino speak for themselves.