I'm on my 2nd ipod (30GB 3rd Gen) and it's great!
Not only for music in combination with itunes,
also as a portable harddrive. There are a few nice
gizmos out there that allow it to read digital
camera media or play your ipod music via a
radio station through your stereo in the car
or at home.
Also it has a calendar, to do and a contact list built in
which work seemlessly with the Apple software.
Also, the newer models work without problems on
a Win PC...