Whom to R4... Confused very much

I have 3 R4s for now.
Need suggestion for my next R4.
My R4 champs are Valkyrie, IDoom, Herc.

Comments

Are the other 3 not duped?

I would go scorpion. Incredibly versatile champ, packed with utility and damage.

Kitty if duped. If not scorp

If Kitty is duped go Kitty if not still go kitty