CAN SOMEONE HELP ME?!?!?!?

Katy Perry, by far. her songs are loved by a lot of people. Taylor Swift is not very good (I HATE HER!) Bruno Mars, No, I hardly ever hear of him, and Justin Bieber, its either someone desperately loves him, or someone desperately wants to kill him, lol Katy Perry's way better than any of them, even though im more into rock and acoustic and country.