Depending on where I am and what system I'm working on, I use Word (Mac OS X), or GNU nano 1.2.4 (either on FreeBSD or Mac OS X).I tried to deal with Gryph's freaky Emacs fetish when I signed up and my brain wasn't having it. ;)
When I owned PCs, I used OpenOffice and/or AbiWord. Neither of them is where I'd like them to be under OS X, from a usability standpoint, so I don't use them any more. I've got Word pared down to a usable system with a minimum of annoying autocorrections, I've taught it that "Salusian" really is correctly-spelled, etc.
Ard