Not sure when e.Digital is putting out this product, but it will definitely be something to look out for. They even have a 20GB model. I know that if this thing reviews well, I'm definitely trading in my Rio.
Odyssey 800
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Size & Look - Same as iPod, but either silver-colored or actual stainless steel body (not sure which...but it's silver basically)
Capacity - 15GB
FM Tuner - Yep
Built-In Microphone for the ability to record voice messages? - Yep
Transfer Technology - USB 2.0
Compatibility - PC *AND* MAC (even iTunes compatible)
Price - $330
iPod
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Size & Look - we all know it
Capacity - 10GB (worse)
FM Tuner - Nope (worse)
Built-in Mic - Nope (worse)
Transfer Technology - Firewire (slower than USB 2.0)
Compatibility - PC *OR* MAC (it only supports one or the other)
Price - $400
Odyssey 800
------------------
Size & Look - Same as iPod, but either silver-colored or actual stainless steel body (not sure which...but it's silver basically)
Capacity - 15GB
FM Tuner - Yep
Built-In Microphone for the ability to record voice messages? - Yep
Transfer Technology - USB 2.0
Compatibility - PC *AND* MAC (even iTunes compatible)
Price - $330
iPod
-------
Size & Look - we all know it
Capacity - 10GB (worse)
FM Tuner - Nope (worse)
Built-in Mic - Nope (worse)
Transfer Technology - Firewire (slower than USB 2.0)
Compatibility - PC *OR* MAC (it only supports one or the other)
Price - $400