It is good. Very good indeed. Although I prefer the Manga, on the anime Kira gets at least some dignity in his death (swimming in the complete last chapter -_-). But I really like the weirdness of Raito, even though he is just trying to improve humankind, he kinda turns into an antihero, the best hero there is:)
Oh, if you liked that one, you should give a look to Code Geass. It rocks
