Rihanna is the most talented singer.. and Im gonna go ahead say dancer.
Nicki is a good rapper and songwriter. - She's the most talented person in the line up.
Ke$ha writes good songs. Katy writes.
Now if we step outside music. Rihanna models and acts, and can sell a product. Nicki tries. Katy.. idk. Kesha - meh.
Im gonna vote for Ke$ha. Apart from songwriting.. she seems limited everywhere else.
So far that I'll vote for her.