Who to go for in arena shipments?

GrimmeLin

I have enough shards to get one character from 0 stars to 7. I have sid and hk already, who should I go for next? I'm just looking for the best overall character, I've already got my main team planned out and mostly there for pvp. So who should I go for?

FatherToast

I'd go for ST Han for best overall. Ackbar is also very good, but primarily on a team with Leia or HRS (he may also serve you well for phase 1 of the raid).