Review of She, The Ultimate Weapon
Saikano is a tragic love story, but not "tragic love story" as in Romeo and Juliet (I'm not sure about the anime), but somewhat the opposite/reverse/inverse. This story (or "Love Song") is enjoyable and dramatic. Animation was by Toei and Gonzo (2004), and that should give you an idea of the quality. Artwork changed from normal to a comical form once(1 time), I believe, for the sake of comic relief. The background sounds did their job (though I hardly noticed until the last episode where it changed the music genre), and the opening and ending songs were good. The English voice dubs are sub-par/mediocre (especially for Chise(theheroine)).
The Characters were well suited for this story (though I can't personally say that I enjoyed each and everyone of them). I can't really imagine any other personality on any of the main characters. The supporting characters were diverse and close to the main characters.
Enjoyment....
Pros: It's a good, dramatic story that reminds you of the transience of life. Hopefully the OVA will answer some of the questions left pondering from the series' epic ending.
Cons: Too tragic for my tastes (but still managed not to cry).
Science Fiction (SF) elements were over-shadowed (for me).
I didn't feel that some of the scenes were entirely necessary.
~So, if you happen to be a little bit more sensitive than I am (doesn't take "A Dog of Flanders" to cry), and Romance/Tragedy/Drama is your thing, I'm sure you'll be able to enjoy this series more than I did.