I really love anime and manga but I'm not that otaku because there's a lot anime that I have not watch yet so my goal is to reach 200 anime series. I hope I can reach my goal ;D
First of all my favourite overall & mainstream anime is One Piece.
For me, One Piece is the best anime that had been created by Oda-sensei.
I respect Oda-sensei for being the best man that ever created such a beautiful, wonderful, and awesome story line and characters.
Second, my favourite non-mainstream anime is Mirai Nikki.
This anime is all about killing, friendship and most beautiful part that I love in this anime is the romance between the girl and the boy who plays the survival game. I really love this anime.
That's all from me. Wish to update more here. Bye :D