Seeking Advice, Clip Zip or Clip+

I would definitely keep away from the Sport.  It just feels like a lazy emulation of some of the Zip features.  It will not even allow the selection of albums to be added to the Go-list playlist on the fly.  It can only be done one song at a time!  So just imagine trying to set up an ad hoc selection of half a dozen albums while waiting at the lights.