I don't see much Otaku/Perverted Girls in much anime series...
But if I would choose between Kuudere, Loli, Airhead, and Tsundere... I would have to go Tsundere all the way..
I enjoy the other 3 i mentioned but I like the Tsundere girls, like Louise (Zero no Tsukaima), Taiga (ToraDora), Ai Fuyuumi (Ore no Kanojo to Osananajimi to Shuraba Sugiru), Airi Sena (Mashiroiro Symphony), Ibuki Hinata (Hoshizora e Kakaru Hashi), and many more...