The only mask that works for me is the Resmed Quattro. They seem to have solved the mouth open bad seal problem. They have one called the Quattro Air also. It's much smaller, but not for me. Good luck.

Perhaps someone can assist me. I was diagnosed ten years ago. I was prescribed a Vpap 2, an old dinosaur machine they tell me, and it was set to 24/20, as I was 98th percentile severity. It would give me my upper limit on inspiration, but halfway through my expiration, it would kick in again and my ...