Halibel cuz she is a total hottie <3
On a serious note I believe Kyoraku wins after a good battle.
@taichokage: Well, he had help. But yeah, I think he'd still pull a win.
Shunsui without needing to go any higher than shikai.
shunsui.....even after he saw hyoten hyakkaso he stated that he was stronger than toshiro. so that means he can pull also a win by logic against halibel
Shunsui has this easily, while in Shikai. And he doesn't even need to be serious or bloodlusted initially, either to play around with her.
Halibel wins by seducing Shunsui...
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