When I was on OS 9 with my Pismo about a year ago, doing a bunch of writing that way, I hopped back and forth between Word '98, WordPerfect 3.5e and AppleWorks 5's word processor module.

All are great at doing what they do, but I really liked Word the best, despite its higher demands, mainly because of it's file format. I had problems getting WordPerfect even to save an RTF, so it was unsuitable for writing things I wanted to be read out and used on other computers.