It's just an awesome device.
I have a 10GB iPod. It is fast, interfaces with my PC just fine, and it just works.
I don't have to worry about size or durability. Considering my jacket pockets have my Panasonic Duramax, Samsung i300 Palm Pilot Phone, 10GB iPod, and occasionally my Diamond Mako PDA, this is welcome! Any other mp3 player would not fit in my jacket.
It's also put up with a lot of damage I can inflict. Considering I've gone through several notebooks, the fact that the iPod is still here is a good thing.
That, and it's got the standard Apple User Interface. I have been holding off on a Mac because of the obvious price/performance issue, but that should be solved with the 970. However, don't discount Apple. The UI makes it worth it.
I like small electronics that are unobtrusive. This is one of them.
Otherwise, it'll be joined by a PowerMac 970 soon, hopefully running Oracle 64-bit

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M