I've had mild to moderate SA for years and used a CPAP for about 5 years. I tore it off in the middle of the night or fell asleep without it half the time. Then I heard about the oral appliance and got one about 4 years ago. It is much more comfortable than the CPAP and it works for my apnea. The main problem is getting M'care to pay. This is a great device for many, and I wish I could get M'care to pay for it. Why do they love the CPAP so much and hate the oral appliance?