Should I R5 5* Sentinel, Quake, Fury or Colossus???
Ok so let me fill you guys in on my account and thought process here before you vote. I'm at 6.2.6, in a Gold 1 alliance and run map 5x5. Have not touched V1 but have went through V2 and V3 once for the completion rewards. 
I currently have two 5*s at R5 in Namor and Corvus and one 6* Ghost at R2.  I have around ten 5* champs at R4. 
I've narrowed it down to 4 champs but for the life of me I can't decide. 
1) Sentinel - awakened and would help me 100% V2 and V3. Hes also got nice immunities 
2) Quake -awakened, I've used 4* and 5* Quake an absolute ton over the last 2 years and feel like I'm pretty solid with her skill wise.  What worries me is not knowing how much more aftershock damage will result in taking her to R5... I can already kill most everything with her at R4 so I'm not sure the R5 is even necessary 
3- Nick Fury - awakend- the Bleed king but I dont have a Capt Marvel Movie. I like the damage he can bring but not sure I need another straight damage dealer with my current R5s. 
4) Colossus - awakened - I love the buff and new immunities, his downside is that hes not great against stun immune opponents. 
Please take my current t progression and roster in mind when voting and thanks for your help.  Any input via comments would be much appreciated