Sasuke, low to medium difficulty. If Oonoki immediately draws out Jinton, Sasuke can immediately draw out Amaterasu. The difference is that Jinton can be dodged while Amaterasu can't. At least not by Oonoki.
Everything else he has shown so far will lead to a close range fight, which he would lose rather easily due to his back and worst case Susanoo, or to Sasuke shooting him with arrows that he can't dodge as well.