How good are Online Music services?

I'm planning on joining an online music service like rhapsody, I-tunes, or Yahoo music. I have search several services but I'm not sure which is the best one. I would like for someone to recommend me one. All I want from the service is to download the music and burn into a cd to play it on my car stereo or home stereo system. Thanks

1) I have yahoo music and really like it.