i like using all of them and i wondering which one is more worth using

They're all browser based and free if you want to check them out tell me which one is best in your opinion

https://play.spotify.com/home

http://www.deezer.com/en/

http://www.rdio.com/

IF YOUYR IN THE US YOU CAN'T USE DEEZER!

If theres any other music site you would like to tell me feel free