Anime or Manga?

[Super_Boom]

Depends on the genre, and the quality of the original work. Typically I prefer the source material in any medium, but I have seen a lot of anime that do a great job adapting and/or supplementing the original work. Hunter x Hunter and Shingeki no Kyojin are two popular series in which I'd strongly recommend the anime over the manga, for instance.

Typically though, I'm happier with the manga. Certain things don't lend themself well to animation, and you're always running the risk of the studio either rushing the material and skipping important scenes, or bloating it with fillers and useless content.