what i'd REALLY like to hear is the original version with Bono on vocals instead of Johnny Cash.
According to "At the End of the World," this version was intially set to be the centerpiece of Zooropa until Bono went to bat for Cash's version.
And speaking of U2-penned songs sung by others, does a completed studio version exist of She's A Mystery to Me with Bono on vocals? I'm familiar with the live versions, but I've only heard the rough outtake (and half the song at that) from the R&H sessions at Sun Studios in Memphis.