I've had XM since November (Score 1)

I have used XM for over six months now and have been fairly happy. The audio quality is not CD quality (no matter how much they want you to believe that), it is closer to mp3. I wouldn't be too concerned about commercials on XM. Commercials are only on some of the channels and those with commercials are limited to 4-6 minutes an hour with 60 sec max breaks. The commericals are hardly a problem. As for Clear Channel's involvement, they are only an investor and as far as I know do not influence the music (except the Clear Channel networks: LA Kiss, Houston Mix, etc...). I highly recommend the service if you want more variety on your radio. You will be amazed at the variety of music on channels. I listen to the 80s and 90s networks often and I almost always amazed at how I haven't heard this song in a long time...