It's above average, but far from the best I've seen. What annoys me the most is the ridicously drawn out fights and frequent flashbacks, but all animes have those when they have way too many episodes and not enough storyline. Not saying the story sucks, just that there isn't enough of it to justify 150+ episodes (and I expect it to get atleast 300 episodes long). If they had proceeded at a "normal" tempo, they would have caught up with the manga though, and I can see them not wanting that.
Oh, and fanboys are also annoying.