Deadpool X-Force, Onslaught, Kingpin, or Juggernaut
I need to R4 2 more champs to unlock Paragon. I've narrowed down my 6*s to four main candidates, and my main goals are to grind for valiant and do side quests for rewards. All these champs are excellent, but I'm not sure which one will benefit me the most, given my limited resources. I know some of these are available for 7*s, but I doubt I'm getting them as 7*s soon, so that shouldn't be weighted too heavily as a deciding factor.