First FF Mask (Quattro)

I started with a Quatro and am a heavy mouth breather (for most of my life -- sleep or awake).

I adapted to it very quickly and have essentially zero leaks.

From time to time, I swallow a bit of air, but mostly when the machine is ramped up to max pressure of 16. Even that isn't a big issue.

I can see how people with a sharp hook in their upper nose might have issues with the max, however. I'm relatively flat there compared to some folks and the mask is just bearable in stock unmodified condition (some red-marking).

Otherwise, I like this mask a lot compared to the 5 or 6 others I tried during my sleep study. The kept me up all night with leaks and super tight straps.