I'm reading the manga, but that's about the same.
Story is indeed top shelf, but alas only to about half of the entire story.
Once L dies, the story gets less interesting and a bit repetitive.
I've seen the first episode of the anime, and I gotta say it's pretty damn well drawn.
It's a great show. The characters are very interesting and likeable, I don‘t dislike any of the characters(which is unusual for me) I think that is one of the big reasons I like it so much. The story is very engrossing and there is never a dull moment. It's just one of those rare gems.
I know this post is quite old, but I have to say I full heartedly agree. The first half is absolutely amazing. This is the only Anime/Manga I have ever really enjoyed. The philosophical question this show uproots are just amazing and it can really make you think!