Which 7* to Rank 2?

JragonMaster170

Hey all. I finished act 8 a few days ago, and am struggling to decide which 7* to take to rank 2. Below are my options. All are unawakened. In general, who is the better pick? Thanks.

Ercarret

Domino

It's a bit tricky since you have a collection of good but not "OMG!" champions. Domino is...Domino. She's capable of great things on both attack and defense, and I have her at r2 (unawakened) myself. I don't particularly like playing with her since she's very RNG reliant when it comes to things triggering, but when she hits hard, she hits hard. She's also a menace in Battlegrounds if you play that mode much.