I have been wearing a CPAP for about 15-16 years; I really don't remember when I got it. I sleep on both sides and my back, kinda like a wave just rolling all night. Drives my best half crazy, but it is much better than tossing accompanied by a freight train roar. I have a terrible time with dry mouth and tried to go back to a full mask from my nose pillow, but it did not help and I could not find a material that did not cause my face to sweat and then develop a rash, so back to nose pillow. I also have not been able to take full advantage of mine as higher pressures cause me to swallow air and I wake up with much bigger problems than missing a few breaths. I am unable to sleep in a lab and am being set up for a self-titrating machine to give my doc the data they need. I do take mine everywhere I go. If I nap in my recliner, I move my machine to the den. Before my first test, a friend of a friend died in his sleep while waiting to for a study, so I never sleep without mine. Forgot to take my power cord to the outer banks one year and had to drive back to the mainland and go to several computer stores until I found someone with a huge box full of spare power supply cords and one fit my machine perfectly. Sorry for my verbosity.