Learn more about the machine and do your own management as well. It’s very easy to get into the machine settings to control your air flow, temperature settings, and so on. Take the time to learn what the data from the machine means.
I currently use a Resmed Airsense 10 and can’t recommend it enough; best sleep I’ve ever had.
Just avoid anything by Philips Respironics. They’ve been messing around hard, class action suits and recalls and haven’t really made anyone whole from the debacle (myself included, I came out of pocket to replace my old Dreamstation).
Medical devices and user privacy
(edit: removed redundant rants and added updates)...