For the new DME, I went to a new provider called REMworks. This looks more like a boutique storefront, than a DME, and they have a very knowledgeable and customer oriented staff. They took my prescription and started the insurance approval process in December 2015. In early January, they called with approval for auto CPAP which I declined. Following another routine doctor's appointment, I had them call for the bilevel justification they needed. Yesterday, the approval came in, and I made a noon appointment to pick up the new equipment.
I had a choice between the PRS1 auto BiPAP (which I already have), and a Resmed Aircurve 10 Vauto. The Dreamstation was not available in auto bilevel. I've never had a Resmed machine before, but there are fanatics here that sing their praises constantly, so I went for the big adventure of a new brand.
First night impressions, results and comparison between the PRS1 760 and Aircurve 10 Vauto: Both machines were setup similarly in auto mode with EPAPmin 9, IPAPmax 18, and PS 4 (PRS1 used a PS range of 4-6). AHI was low 1.07 compared to an average of 1.38 over the past week with the PRS1. That is within normal variation, so I don't expect AHI to increase or decrease with the machine change. Time will tell. The PRS1 scores more CA, and the Resmed more OA, with hypopnea about the same. The Resmed does not score RERA which is a bit of a disappointment.
Most treatment parameters are the same, with both machines recording the same average and 95% IPAP, but Resmed kept EPAP about 1.0 cm higher. Overall comfort is similar, however I am more aware of the PRS1 occasionally not syncing with inspiration and expiration. If I have a prolonged exhale with low flow at the end, the PRS1 will often boost pressure and I'll respond with an inhale. I don't get that with Resmed which is imperceptible and seems to work more closely with me.
QUIET! Resmed is far quieter, in fact the machine itself is inaudible compared to the PRS1 which can be heard changing pitch on each breath.
Resmed pressure changes are much faster, and of course IPAP and EPAP move together, and PS is constant, compared to PRS1 which seems to hold a much more even pressure through the night except for the 2-cm IPAP pressure fluctuations built into the algorithm. When the PRS1 changes pressure, it does so much more slowly.
I'll refine this as I get more experience. The take-away is both machines are equally capable of treatment, and differences are subtle, with a slight advantage to Resmed for being quieter and working more in sych with my breathing pattern.
Here are some pictures of what a DME should look like:



