Who to R5

I have a few 5 stars at R4 who are awakened. I don't really know who to R5 but the options are: Sentry, IMIW, Korg, and Stark Spidey. Help me out.

Comments

Sparky 100000000%

Korg has unstoppable and unblockable abilities. Very much worth it for both defense and offense

I would recommend Stark if you need attack, Korg if you want to buff your defense.