You know I hate to disagree with you, Cliff (lul), but the math doesn't work for you. For $15 a month in both services, after a year of putting it into iTunes, I have 180 songs; after a year into a ZunePass, I have 120 songs. After 5 years, that's a 300-song gap.

Economics says the ZunePass isn't better than iTunes+(Pandora, or Grooveshark, or LaLa, or myriad other free alternatives).