highly recommend the zen micro also. has more features, cheaper, and no registraition necessary, meaning you can transfer what eveer is in your zen to anything else using windows softwear, including another zen.
ipod is trying to make whatever you put on their devise propriatary. meaning you cant transfer it to anywhere unless you use their softwear, you cant even transfer it to another ipod unless they are both regestered to you.
zen has no restrictions. my 6 gig zen has a built in fm tuner, voice recorder, will record from the fm tuner, will store data files, and can be interfaced with windows media center. the 8 gig zen will store photos and display them. the 20 gig will do dvds and other video files.
most major music file sharing services, like napster, msn music, raphsody, and others will recognize the zen also.