It's been fun so far and very easy to adjust to MS Office 2010. The ribbons and tools are the same as 2007, but the Office Button has undergone a major make over. At first I wasn't too sure I liked it, but it is very intuitive and I haven't needed to go to help to find anything yet. If you are still on Office 2003, you really should make the move to 2007 first to easy your way into 2010. You'll be much happier you did.