NeoOffice is the best.

After switching over to an iMac after using PCs with Windows for many years, I find that Writer in NeoOffice is easier to use than MS Word for Windows, it converts all my MS Word legal and technical templates and documents to ODT format perfectly, including special section line and paragraph numbering, and I can perfectly convert documents to MS Word format when necessary. Writer also works well with MathType equations, which I have used in my documents for many years. The only thing that I can find that it does not do is open Visio VSD drawing files, but I use Omnigraffle for that anyway.

SMican about NeoOffice