Music:
I have a zune pass. I regularly download a bunch of songs I don't own via the zune software while I'm at the desktop. Unlike iOS, I don't have to go get my phone's cable from the kitchen counter where its charging, and plug it into the computer to sync these new songs. No, on wp7, I just drag the songs to any playlist I have set to sync with the phone... it syncs over my home network.
The Zune software is, imo, substatially more enjoyable to use than iTunes too. Its simpler, less bloated, and just feels altogether fresh.
While I agree that the Zune software is much more enjoyable to use over iTunes, Zune support is abysmal on an international stance. I care very little about the pending update, and more about proper Zune and Bing services being brought to countries outside the US. If Zune pass existed up here in Canada, I'd use it, but we don't even have the Zune music store. I'm still forced to use iTunes to purchase music, and quite frankly, I'm missing the integrated iTunes store support from my iPhone, being able to buy music on a whim.
Microsoft needs to get on the ball with it's online supporting services that really add to the WP7 experience. It seriously gimps this platforms chances of succeeding in the international market.