No he doesn't sleep that good with it. Some nights better than others. We did all we could to fool the testing. We tried the chin strap on him and nose strips...ECT...lol and I stayed up all night to sake him every 2 hrs to prevent REM. His test showed he quit breathing 59 times an hour. That did scare us and he is in AFIB most of the time and on several prescriptions for his heart and BP. He actually needed the CPAP but was very rebellious at first. No one likes to be told what to do. He now only quits breathing 4 times an hour when CPAP is on. We had to get a mouth spray that prevents dry mouth and he uses a steroid nose spray to keep his sinus clear. He is better and he admits it. He will work now on weight loss.Does he sleep better with it?