Intuitive interface design and easy access to useful features make iWork the best office suite choice on the Mac. Though it lacks some of Microsoft Office's advanced options, iWork '09 is an emerging powerhouse in its own right.
Although Microsoft Office 2007 offers deeper features, particularly for number crunchers, Apple iWork '08 is a strong Mac productivity package and a pleasure to use.
If you're ready to let go of old habits from previous versions of Word and want to make sleeker-looking documents, Microsoft Word 2007 is worth the upgrade. However, less-expensive alternatives handle its core features without the clutter.
Overall, Apple iWork '06 is a compelling package, though mostly due to Keynote 3. Keynote 3 is a better tool than PowerPoint, and Pages 2 offers some intriguing new features, though professional users will still yearn for Adobe FrameMaker.
Microsoft Word 2004 for Mac
Microsoft Office Word 2003
This is the first version since Word 97 that's a gotta-get upgrade. With tons of new tools for the single user and a renewed attention to collaboration for those who work in groups, Word 2002 is the best writing tool on the planet.