I voted for all of them except Ke$ha and Avril.
I personally don't think that Avril will ever make a comeback. The fact that her last album failed to hit #1 and has sold only 300-400k shows that her stanbase isn't that big anymore. Ke$ha.. Well, she's still a newbie so i have nothing to say that would count her out, her debut album debuted at #1 and she is pretty relevant. But i just don't feel that she'll ever have as successful album as
Animal.