I'm still very frustrated with yWriter. It seems like it should be a really powerful tool, if I can figure out how to use it.
However, despite my frustrations with yWriter I do know how to use a basic WP, not that the open office WP can be really considered a basic WP. It's a quite powerful tool and I do use quite a few of it's features. Track changes allows me to note my daily progress among other things. It would also allow me to easily work with a proofreader or editor.
A good example is that today I know, because of track changes that I've already met and exceeded my daily goal for writing.