best character to main?

At first i play using Phoenix easy to use and has healing abilities which gives damage to anyone else. Blazeis great for covers, curveballs great for pushing into corners and blinding your enemies but be careful as it can also blind you and your teammates, Hot hands i mainly use this for healing or blocking someone from pushing on tight spaces. Run it back literally gives you 2nd life soooooo i auto rush with this sometimes haha.