My wife's IPod nano (first gen) just decided to call it quits. The battery said "NO MORE" and decided it would not hold a charge. I sent in a price quote to the folks at Apple and they had stated that it would cost $90.00 and three weeks without the IPod to replace it. I personally had a IPod classic (second gen) and the two of us determined to just buy me a new Zune and to transfer my IPod over to my wife.
So far I have very little complaints about the Zune. For instance, I had to write a script to convert my WMA Professional encoded music over to the IPod's (AAC). It was awesome that Apple had an SDK and API to use with C# to do the conversion. Although, this process took at least 20 hours to run through my 145 albums worth of music. The nice fact that the Zune supports WMA Professional is one plus.
The major complaint that I have now is interoperability. The Zune does not function well with other devices. Right now it supports bluetooth, but only in the instance where you use it with headphones. It also supports WiFi, but only to the point where it can communicate with other Zunes or your PC. It does not have any support in any radios that I know of where you can plug the connector on the bottom and have the radio operate it. I own a Scion TC and on my TC it came with a radio that had full support for the IPod (even came with the cable for it). I understand that this is only the second generation for Zune, but I really think the reasoning behind Microsoft's lack of supporting these features is because they want you to buy into Ford Sync. While I do consider Ford a decent automobile company, I am not going to turn around and sell my Scion TC (which I love) just to get a car that supports my mp3 player.
I guess that means I am stuck using an Aux cable and will have to resort to the wishful thinking that Microsoft or someone else will produce a method to make this work.