Well at least we have a number....so if that's about 15+ chapters, than in about another year it should be over.
But that will be heartbreaking. I love this series. I just saw the anime and the movie (I CRIED AND STILL CRY WHENEVER I SEE ALFONS HEIDERICH SHOT AND WHEN HE'S DEAD
), and I love them.
The order, in order of favorites, is the manga, then most certainly the movie, then the anime.