Manga.
Manga is quicker.
Manga is told better.
Manga has better art.
Manga doesn't censor shit.
Manga is more violent.
Manga is more sexy.
Manga provides more angles.
Manga provides the original story, and no filler characters added.
Manga, for the most part, does not spam useless shit for chapters on end.
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Anime
Fight scenes, color, and loli.
Thats about all anime is really good for. And even then some fighting anime, mostly shonen, talk for fuckloads longer than the non-fighting anime.
Moe/Loli anime are supposedly made for kids, but the majority of the paying audience are these perverted adults. I think this shit is just stupid as fuck sometimes.
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My personal suggestion:
Read the manga, then watch the anime's fight scenes.
Because all too often are anime long and drawn out, skip important story parts, or even turn the ENTIRE story into filler.(SDK)