I like both genres, so I end up choosing between them based on my current mood.

i watch both at the same time... if the last shonen episode was boring or too serious or just sad, i wud watch shojo to bring my mood up into a happy one

I like shojo the most but I also like Shonen.

I say shojo!! I love Fruits Basket and Kodocha!!

Hm, i like both kind of Mangas/Animes

Shojo:
Mars, Peach Girl,
all of Yuu Watase,
all of Mayu Shinjo, and many more

Shounen:
One Piece, Conan......

And specially: Shounen-Ai :D [Mangas and Animes *nosebleed*]

Neither. Seinen is superior.

shonen hands down. but they both have works that i like and dislike, but shonen has more i like than dislike so i choose them.

I personally prefer shoenen, but with a hint of SOME light shoujo touches too it, such as possible romance and things like that