Oi, wish you luck x 2.
Hmmm... Death Note is quite a popular one. I should check into that. And no, I don't exactly have any manga to "recommend" because the one I am reading/ watching right now will only disgust you in a grotesque manner. .....
Meh, I'll tell you anyways, 'Vampire Knight', a shojo manga. Hehe. It is not very close to the Twilight series, but it is technically about vampire social/ cultural affairs along with a dark, unorganized love plot line. Plus, one of the characters on there is quite visually appealing. >< (Kaname Kuran-sama)
Since you will probably be reading this when you get back, for the sake of this conversation's well-being, fill me in!