This is a Manga/Anime series, and I love it. I love superhero comics, but I haven't been reading Marvel or DC consistently for several years now. And this series has filled that spot for me recently.
I think out of all the Manga I have read that this series is written very much like a "Western" style superhero comic. The art in it is very good. The arcs are close to comic arcs in that there not very long. The actual story I think is very good and the characters grow a lot.
The series has just currently passed the 100 issue/chapter mark. And the 1st season of the Anime has ended and it has a full English Dub already.
I think if your a person who has had trouble getting into Manga? Then this series is worth a shot.