I've got all 3 sizes of F10 masks. I started with L, then went to M, then went to S. I was falsely applying the ResMed template. Anyway, I found I could never get a shaped good fit so I went with the P10 and have been happy. When using the ResMed template, the bottom of the template has to be between the bottom lip and the chin crease I think. If you're finding the M is still not that great, I have a feeling that a S is not going to suddenly become a perfect mask for you. One day, I'll turn my S M & L into a piece of art for all that's worth.
Sleep Apnea has given me a terrible memory. Please forgive me if I've repeated myself.
Prominent cheekbones are a problem with masks and it can be even worse if you have a deeply recessed nasal bridge. I do not think that they make them much narrower at the cheekbones than the F10 (my gut feeling).
I would recommend the F&P Simplus to you if you are going to stay with an FFM. I have the prominent cheekbones and the deeply recessed nasal bridge and the Simplus works fairly well for me. The Resmed Mirage Quattro actually works the best for me but I have to have it strapped pretty tight and that makes it quite tight across the cheekbones. Another reason that it must be strapped tightly is my pressure which is 20 cm/H2O
The Simplus is the only one that doesn't leak at the top for me. I tried the Air and the Quattro. The good thing about the Simplus is if one size doesn't fit, all you need is a different sized cushion, not a whole new mask. The size difference is in height from nose to chin and not width. I use the small so I can wear it fairly low.
Apnea Board Moderator
Breathe deeply and count to zen.
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.