Thank you, everyone, for the replies! I'll look into the mask cushion, and ask my doctor and DME provider about the Simplus mask. I've tried nasal pillows in the past, but never had good luck with them. I'm a mouth breather, and I don't get good airflow through my nose. I also have a hard time getti...

Quick background: I'm 52, male, not overweight, and have OSA due to a narrow palette and my tongue effectively being too big for the back of my mouth/throat. I've been using a dental device for about 14 years, but it's not effective enough anymore, and I'm trying CPAP. Untreated, I have an AHI of 37...