So I was thinking of giving an 8 Gb Zune as a gift this Christmas; I found a few good deals, but most of them involve the word "refurbished". How is a refurbished Zune different from a "used" Zune? Should I make the leap and buy a refurbished Zune as opposed to just getting a new one (it certainly would be cheaper)? Any experience you've had with refurbished Zunes? Thanks!