I just realized that I may have biased my survey on brewing water by titling the post in such a way that RO/DI brewers would preferentially be drawn to open it. This post is here for no reason other than to draw the attention of those who might not be attracted to a post with RO/DI in the title. If you are one of those please go to the survey post at https://www.homebrewtalk.com/f128/how-many-use-ro-di-390288/.