"Zune, on the other hand, is highly tuned to a specific hardware set and it is designed to execute a specific set of features. As for the UI, it shares some visual similarities with PMC. However, the menu system is more refined (some might say Spartan) than PMC. We've been able to take some of the learnings from other UIs we've developed and incorporated those elements into the Zune player to continue to hone the experience. For example, we've paid attention to things such as focus and made changes to make it very intuitive and dare I say fun to use. I can go on and on about the similarities and differences between PMC and Zune. In the end, both are good device-side operating systems. I have a personal fondness for both and I think both are well suited for their purposes."
BostonPocketPC.com got together with Bill Wittress and fielded ten questions primarily covering DRM issues, the Portable Media Center (PMC) platform, filling stations, and integration with core Microsoft services. Give it a read, if you want to learn more about Zune.