NV Access has posted an extremely short survey to get a sense of the level of satisfaction its users have with the NVDA screen reader. There are only three questions. One asks you to rate how likely you are to suggest NVDA to others, one asks if you’re using it primarily for accessibility testing and the other allows you to explain in as much or as little detail as you would like why you rated the software the way you did on the scale. It shouldn’t take you long at all unless you decide to write a novel. You can go here to take the survey.