i prefer manga over anime. i remember a long time ago it use to be the other way around because nothing beats move colored pictures with those cool effects and sounds but then i stared to get displeased with how some characters sounded in the anime cause they'd seem to have a diff voice in the manga depending on their nature. also, anime tends to speed things up and cuts out a lot of good details to get to the point. i love details and extra info on my fav characters so the anime wasn't doing me any favors in that part.
last but not least, i don't like how the anime's story line runs off track compared to the manga because then the endding turns out to be crappy. i hate crappy endding.
so, manga is better.