Kola: You had mentioned that you wanted away from this Bill Gates stuff in another post. Have you given any thought to iWork (Pages,Keynote,Numbers)? It's really good if you aren't always sharing files with Windows users. It does export to Word/ppt/xls, but that can be flaky sometimes. (of course, you can always generate PDFs of your documents for sharing on PCs)
As a mac only software, it is amazing.