For years I had used the Swift Nasal Pillow Mask and Headgear. Very comfortable fit, but occasional problems with air leaks. The hissing noise of these air leaks had long been a problem for my wife. I usually sleep right through. So I set out to try other masks, but learned a hard lesson and am now back on the Nasal Pillow! Please, if anyone has a recommendation let me know. THE CPAP Pro II "NoMask" Problem ....................... I was looking for a QUIET CPAP mask and made the mistake of purchasing a CPAP Pro II from Stevenson Industries in Simi Valley, CA. I threw away $139.00. Once you purchase this product, there are no returns. No refund possible. I was aware of this policy while pouring through the website (https://www.nomask.com/), investigating the product and product claim. I called Stevenson with a list of questions and spent a considerable amount of time with a very patient and seemingly well-informed service attendant....