I've thought about Dragon but have not tried it... But I did see a site with lots of comments from writers...
Think this is it:
a post on voice recognition software. It's all comments from self-published writers, it seems. One of them uses Dragon because of hand problems: “I love Dragon! I have physical problems with my hands and have used Dragon & its predecessors for years. I used to work as a social worker for social services and it was a little more basic at one time. Then Dragon bought out its competitors and concentrated on improving it. Now it is superb, even straight out of the box it has a pretty good rate of accuracy but it has lessons for you to read an excerpt from a book on the screen and it matches each word with your speech until it gets it right. It is so much quicker than writing too.”
I'd love to hear what she chooses and how she likes it. (I have rather weak hands--from issues during pregnancies, not arthritis--and now and then consider something like this.)