Upgrade 4* or 5*?
Hi, I'm not playing that long but got myself a couple of 5* by now: * Red Hulk (duped) * Gambit * Ultron * Colossus All of them are sitting at Rank 1/Level 25. My main team currently consists of duped 4*: Hela (R5/L50), Stark Spidey (R4/L40), Mephisto (R4/L30), Agent Venom (R4/L40), X-23 (R4/L40). Question now is: Should I…