I started CPAP last December. I have moved to a BIPAP and oxygen. I have some good nights and some bad nights with this system. That said, I am much more optimistic that we are moving to a system that works for me. I started with nasal pillow and have worked my way through several masks ending with a full face mask. I recently had some dental surgery that required me to go back to the nose pillows combining it with the hose from the top which I didn't have the first go round. This time that system is working. I am convinced the hose in the top is best for side/stomach sleepers because it doesn't interfere with arm movement. I have had the oxygen supplement for a week now and feel it is making a difference.