You'll probably want this topic moved to the iPod forum. One of the moderators can move this for you.
As far as the iPod, the new ones aren't 2 tone like the iPhone. The iPods have an all aluminum (I think) back. No one knows if they scratch easily because they haven't been released yet. You'll probably have to wait awhile to get some feedback.
Sent from my iPhone 4S using Tapatalk