2. You cannot believe everything someone in a position of authority tells you. You must continually question what they are telling you and the reasoning behind it. If they say it is "technical" or some such, then you explain you will start looking for someone who can provide answers to your question. Take notes so you get it right the first time. Don't be embarrassed to ask for clarification or repetition.
3. You cannot trust your DME provider to tell you the truth about competitive equipment and supplies. They earn their bonuses doing what is best for the company, not necessarily the user or patient.
4. You will not necessarily kill yourself if you tweak settings (within reason) and record the results. I personally discuss what I plan to do with my physician and ask him about contraindications. I also share the results with him.
5. There will be normal and customary expenses involved in experimenting with different masks. I have tried mixing and matching headgear on my Mirage Activa LT and have found that a headset from Phillips Respironics could easily be adapted and provided additional comfort. Since my DME will not let me mix and match, I eat the cost.
6. Making equipment cleaning a habit pays off in less chance of bronchial inflammation.
7. Aroma therapy is probably a placebo and you get used to the scent so quickly the benefit dissipates after a short period.
8. Equipment placement on your nightstand might benefit from some dual-stick Velcro to avoid accidently pulling the lightweight AirSense around -- possibly with catastrophic consequences if the unit drops and water gets into the electronics or works.
9. There are always flaws with my current equipment that makes me look forward to the next iteration -- even though you can't benefit from it unless your machine is replaced.
10. Install monitoring software and keep learning. Without a reference point to start the discussion, fact becomes conjecture, and results become more iffy.
You may switch the order of these items around, but they came off the top of my head as I thought of them -- so they are not listed in any order of importance.
Best of luck fellow patients.