[auntienomen]

You can just buy the damned APAP. The gear I use can be had off Amazon for about $700. A Respironics Dreamstation, and a Resmed Swift FX nasal pillow with headgear and quick connect hose. Probably cheaper if insurance covers it, but you don't actually need it.

If you think you can breathe through your nose with your mouth closed, the nasal pillows are nicer. If not, get a mask. They're nice to have anyways, if colds clog your nose.

[danielparks]

Weirdly, the nasal pillows don't work for me — my AHI is higher when I use them instead of my nose mask.

Fortunately, the masks/pillows aren't super expensive, so folks can experiment.