Having been a free subscriber of Sirius XM Canada (6 months free with new car deal), I find that their model doesn't work for me since I have several vehicles that XM seems to feel that I should pay individually for. Not going to happen.

Instead I have become a big fan of Spotify. Since my cell phone is always in my pocket, I can enjoy the music of my choice in any of my vehicles, plus at home, at work, or wherever I choose to use it.

My prediction is that in 5 years Sirius XM will have gone the way of Blockbuster, Kodak, and the Excelsior Buggy Whip Company .