I'm not really sure which I'll like better...anime and manga both have their good points and bad points. It seems like manga always has more detailed and consistent drawings, whereas anime has less detailed and more varying drawing styles (because they have so many people working on it). But in manga, you can't see attack animations or henshin animations...Manga is a lot cheaper to collect, though!!
Of course, this is only speaking for the magical girl genre...it's like a play and a movie. There are only so many things you can convey on a stage that you can expand on a big screen, but a play can last for several hours and fit more plot in, while a movie generally lasts a shorter time than a play...it's hard to compare them!