User blog comment:Kaestal/What is your favorite/least favorite Bankai?/@comment-5398287-20160405200240

Favorite: for power, Zanka no Tachi. For sheer style, Tensa Zangetsu.

Least favorite: Rukia Bankai (can't be bothered to remember the name). I've got nothing against its ability at all, but the lack of buildup to its existence was stupid.