I have used the Original and Scuba for years and have gifted and recommended them to others. I would always say, "Try it for two weeks to get used to the size of the head and you won't be disappointed." I have found that the Source needs no such caution while still offering all the benefits of the previous models. I think that it may well become my favorite RADIUS. I thank you, and your company for all you do.
Lyndon
New York