Tried XM and the "other" in NYC at DigitalLife... Less musical selection than I have on my own players, quality obviously no better (if not worse), navigation and interface extremely sub-par on a first-impression basis, it's "radio" and you have to pay monthly for it. Yuck. If I don't want to have a choice about what I'm listening to there are hundreds of free internet streams around (for when I'm not mobile). I just hope the focus of digital radio doesn't (continue to) de-rail other forms of mobile digital audio with built-in storage.

Bruno