Back to the original post: No, because I haven't read them...
To be truethful though my wife read the Twilight series and enjoyed them. We both read the Charlaine Harris books and we both liked them but I don't think they real fall in the teen genre. As long as a parent doesn't mind their kids reading the books, I am just happy they are reading. The market will keep making what the readers demand. If they are buying it someone will keep writing it. It seems like right now this is what the YA audience wants.