Good luck Michael! I wish I could help, but it's going to be very busy for the foreseeable future.
Try posting a couple of screen shots including an 8 to 10 minute segment showing your waveforms. Lots of people here can help you interpret your data.
Michael, one suggestion to you is to shut-off the graphic in Sleepyhead for VS2. VS2 is apparently a snore, but does not influence machine pressure. It is a distraction and looks bad. With the other issues you are dealing with I don't recommend that you give it much concern. To turn off the events, got to File/Preverences/Events and un-check the boxes for VS2.
The sense of getting decent rest, and a quieter, AHI that shows therapeutic efficacy is key here. Snores can indicate obstruction, but the machines are not perfect in their detection of snores, especially VS2 (only in Respironics machines). You can have moderate snoring and still get good rest. In terms of obstructive apnea, the progression seems to be snore- RERA hypopnea, - OA. Generally EPAP is used to relieve OA, the most severe manifestation of obstructive apnea. In bilevel machines, pressure support (minimum) is used to then mitigate hypopnea, then RERA, then snores. So you can see the strategy here is progressive. If pressure support develops CA, then we begin to compromise and will accept more of the less significant events. Although your machine treats CA with machine triggered breaths, you still want to keep that at the minimum level possible while minimizing obstructive events.
With complex apnea like yours, you are going to have to accept some compromises, but you're still working towards optimizing the balance of what you treat and what you accept. BTW I saw RobieSue has offered to look at your data. She has developed some excellent articles (wikis) on this forum and is a great resource. It would be interesting to hear what she comes up with.
She has been a well of information. Thanks
Maybe that should say a wealth of information...