Of course this isn't all waifus in this anime/hentai. And I'ma say this; I am not a Sona or Xenovia person. And Rias definately isn't my favorite here, but I do acknowledge their waifu-material. (Just before anyone says, I am NOT a Rias hater.)

Everyone else though.... Mmmmmm....

TheOneCutKiller
Demonic_Emperor
ReaderGodzilla
NeoSyber6
Zekeking81
TheDarkEmperor