Manga with a satisfying conclusion.

I've been on a little reading spree lately and have been burned by the abrupt endings of a few series (Psyren, Gantz and Gamaran come to mind). So I'm simply in the mood for a finished series that has a satisfying ending.

I don't necessarily like shoujo stories, but I'm pretty much open to try anything if the payoff is worth it.

Thanks for your time.