I've seen the whole anime but not all the mangas only up to vol. 7 TT.TT their each unique in their own way but i'd have to say anime .
I like the anime better, though I've only read about 3/4 of the released manga so far. It's good, but the anime makes me cry more, and it gets my fangirl persona excited. XDD I liked the ending too, it was weird but really unpredictable...
Manga > Anime. The Anime's plot moves quickly, and keeps the story within a few places. The manga expands, adding new countries, areas of Amestris, reigons, people, Homonculi. The manga has everything the anime has and more. Plus, the Manga is just plain funnier.
Heh. Maybe that's why I don't like it as much. I'm a sadist, I like my anime good and depressing. XDD
The beginning is kinda similar to the anime, then the story kinda diverges later on. After that, it really depends on if you prefer anime or manga, as both stories are equally compelling. Also, the mange is still going on.
Manga is better due to it BEING the stroyline. Plus the anime doesn't have ... *Spoiler: Greeling. Yes Greeling kicks arse*