The drawing style in the manga is more detailed but whispier than that of the
anime, and the characters are much prettier, especially in SailorStars
where Takeuchi's beautiful style is clearly at its peak. The manga tankubon
and the art books are really worth getting if for the artwork alone. The
characters and the plotline in the manga are much more mature and deeper than
those of the anime especially in SuperS. The anime and manga can stand
by themselves, but the manga has more of the dramatics and less of the generally
pleasant aura that's in the anime. There is suicide, plenty of violence,
disgusting looking monsters/youmas/daimons/etc, sex implied, and more of the
like. However, nothing in the manga would scare anyone over the age of 10. On
the other hand, the majority of the enemies in the anime are much more developed
than in the manga; in the manga, the villains tend to be pure evil and only get
one or two acts before being destroyed.
The following are links to more specific differences between the anime and
the manga. They are not *all* the differences, of course, since that would
take too long. All the manga covers have been scanned courtesy of
Tsukino Usagi-chan at
http://www.geocities.com/Tokyo/Pagoda/6551/index.html. Please do not use
them without her permission.