Story: Story is fine up until halfway or so. At this point it begins to feel that the writers are just dragging the story along when they could probably just have ended it in 30 or so episodes. I don't know what the manga is like and don't really have any interest in it if it explains more or has some different content etc. Also, about the R rating - I think its only R rated because there might be some mature themes expressed a bit differently than most anime (Killing & Using Humans for example & other topics related to the Circle of Life).
Towards the later episodes it appears that there is more comedy involved in the writing than there was in the previous episodes and it throws off ... the viewers sense of direction i suppose a bit.
Art: Aside from the comedic moments between the main characters when the directors decide to change their faces to be more humorous.. not sure how to describe that... this can become a bit old later in the series. Otherwise art is fine. I'm not usually one who cares for art because I haven't really found a problem with art in any anime cause of how our standards change.
Sound: Sound is fine - I can't really stand the character Al's voice, but maybe thats just because he's eh.. talking out of a suit of armor i suppose (this is an "he is but he isn't" kind of thing.) I also could not stand one of the background songs used in the middle of the series. It just sounded out of place or even horrible in the anime.
Character: I was a bit more impressed than I thought I would be with the characters and their relationships. Sure there are some misses in the anime/manga but overall well done.
Enjoyment: Again up to about halfway I was fine with it and wouldn't mind an episode during dinner or so - but past the half way mark I just haven't really been interested in the anime because it keeps on going off the main story plot.
Overall: Its tolerable. Nothing spectacular but if you want to watch it when youre bored or find it on Adult Swim, if you have it, go ahead and watch it. The dubs aren't that bad once you get used to them.
