i think i good way to 'try out' and ipod shuffle without actually having one would be to do the following:
make a playlist or smart playlist limited to your favorite songs, up to either 512MB or 1GIG
shuffle that playlist on your ipod, and limit yourself to using the remote. put the ipod in your pocket/bag/whatever and leave it there.
now imagine that same experience with a very slim, lightweight player in your pocket (or on your neck if youre a dork
)