I been running an S8 Autoset for the past few years with AHI Events between 4 and 5.
First night on the S9 I got a 1.32 AHI.
I wonder if it was just an extra good night (although I never had a number below 3.0 AHI with the S8).
Setup is the same. Both machines running in plain CPAP mode at 12cm H20. Same mask, same bed, same pillow, same wife.
I wonder if anyone else experience lower AHI numbers with the S9 over the S8???