The Zune is well supported and the only detraction I ever heard from migrating users, was the inability to play AAC files ripped by iTunes or purchased from the iTunes store. But that's an Apple / DMR issue.
That's actually pretty cool, but 6GB is not even close to enough. I will buy something like that when it has a 200 or 300 GB capacity. I am ready for a 60GB Zen Vision, my 30 GB is full and I want more space.