I mainly read a mixture of shonen, shoujo, shonenai and josei manga and steer clear of hentai and ecchi.
My favourite shonen manga at the moment are Nabari no Ou, Bakuman, Bloody Monday, Amatsuki and Area no Kishi.
My favourite shoujo manga are Hana Kimi, Fruits Basket, Auto Focus and Cat Street.
My favourite josei manga is probably Nodame Cantabile at the moment.
I'm not really sure what else to write here so if you have any questions or recommendations just let me know ^^