I prefer MS Office for Mac, for maximum compatibility with Windows users. If you don't want MS Office for some reason, there are many alternatives, such as iWork, NeoOffice, LibreOffice, OpenOffice, Google Docs, etc. Searching the forum will reveal dozens of threads discussing these various alternatives and the pros and cons of each, such as this small sampling:
WordPerfect??? Good Lord. Once the office's wordprocessor, failed to change enough for the GUI world and got trounced by MS Word. Lesson: sometimes u have to leave the legacy stuff behind and start anew.