I figured Toshiro had something up his sleeve, but I'm not at all convinced he can take Halibel. Without some serious help he's still gonna get pwned, or realistically, he should. I wanna see Yamamoto face off with Aizen, though I have doubts that the battle will play out that way. Also, still waiting for the fight between Kyouraku and the #1 Espada to get interesting. I'd say he has a chance considering he's one of the most tenured captains next to Ukitake, trained by Yamamoto, and also alongside Ukitake, said to be one of the most powerful captains in the Gotei 13. He may be able to hold his own.