For the last year, I have been using both Word 2003 and 2007 in different environments. The benefits of the newer version are not easy to see. The new file format makes transferring files between versions a slower process, although the filters provided in the 2007 version, and downloadable for the 2003 version, appear to work reliably. An irritation is the refusal to open early Word formats, without some changes to default settings. Also documents produced in the .docx format have not always been recognized by recipients of e-mails.
The new user interface does not seem easier to use or particularly intuitive even after a year’s use. As an example, the handling of tables has proved to be particularly frustrating. Many of the 2003 menus are mirrored in the new tabbed ribbons. Not the Table menu. The "Convert text to table" funcion is found on the Insert ribbon, whereas "Convert table to text" is on the Layout ribbon. Why?
Even the table options on the short menus seem to lack the convenience of Word 2003.
The Acrobat export facility is one of the best features of Word 2007. However, in this area, Word is playing catch-up with the open source Writer application within Open Office which has enjoyed such a facility since version 2. The facility to inspect the hidden metadata and remove it if required is unglamorous but very welcome. Unfortunately, as with many features in Word 2007, it is not easy to find: it is on the main menu at the bottom.