another update from me as just checked my data for the first time in months - highest AHI is 0.1 in last 3M and I feel normal and rested. I still have a sneaky nap without it usually but am functioning well.
I just saw the concern on Resmed quiet air elbow again and am going to try an old style for a few days to see if it makes any difference
Sleeping well and generally treated and used to ASV as my new normal I'd say thanks to all y'all's help !
Rob