Which mutant to r2

Sidd777

I’ve been pretty lucky been my mutant 7 star pulls recently, getting storm from the loyalty crystal and then dust today from act 8. Now I’m conflicted on who to take up to r2. They both seem to have similar playstyles that rely on building up prowess and throwing massive specials. Both are unawakened. Any advice from people who have them on their ideal rotations/playstyles would also be great! I know dust is good defensively, but I’m not sure if that’s reliant on her being awakened.