Office 2007 does seem to be a big improvement for me in particular, as embedding graphs seems to be quite a bit better, and the export to PDF add-on is a useful feature for me as PDF is common in scientific journals etc. I was also able to convert some old 2003 work to 2007 format to try it out, and add styles and stuff to them very easily, and the end result was pretty good. The ribbon menu will take some getting used to though, and the performance is noticeably slower than 2003. It also crashed a few times, but recovered my document successfully in each instance.