Your thoughts on who to R5 (5 Star) or R2 (6 Star)

Looking for thoughts, opinions and advice on my top 13 Champs. In the screenshot are my top 11 (all 5* R4) and 12, 13 (Venompool and Ultron - my only 2 6* @ R1). To rank up any of these will take considerable resources so I wanted to reach out for your thoughts if any of these 5* are R5 worthy or 6* R2. Thanks everyone!


1
Comments
I also enjoy Gwenpool... she matches my fighting style with an effective SP1.
If I were you, I would rank up the champ that helps me most for the next content you want to do. A variant for example. Even better would be to get an Awakening gem from one of the variants, and see if you hit a color you need.