I had the pleasure of listening to XM Satellite Radio all week (which was bundled with my Alamo rental car) while working in Mountain View, CA. It sounds great and the music choices are wonderful. There's even an "Unsigned" channel full of nothing but music from unsigned bands. Drops in the signal are handled by soft white noise that fades in and out gracefully without abrupt changes. Given that computers are changing how people listen to music, I wish the interface had the ability to keep the name of the artist, song, and album displayed at all times - that's the most important information, after all. Station identification is so irrelevant these days... XM to iTunes integration is likely coming: