The latest version of MFE is pretty comparable to Windows when syncing with an exchange server. You get mail, contacts, tasks and appointments all pushed directly to the device. You also get global address look up and the latest version will also let you accept/decline meeting requests. What you don't get is the ability to sync multiple folders (dataviz roadsync will do this), check free/busy time or html email. Let me know if you have any other questions and I'll try to answer them. One more thing, you can't turn on you out of office message from the handset with MFE either.