Further update after testing a few things:
changing -e 10 to 11, 12, 13 does not change the overall picture, just increases CPU. Changing sample rate from 12 to 20 does not change things, but uses more CPU and the mini will run hotter.
I am sure there are changes, but insignificant in the grand scheme of things here which is to test dump1090-fa-airspy. However what I have found is that the airspy mini can do just as well, and better than the Orange FA dongle. I get around the same number of aircraft and same distance as well. I see more messages.
And this annotated set from graphs1090 highlights some areas of difference
Observations: the Mini using airspy_adsb provides similar aircraft numbers and more messages than the reference system. So why don’t I use the Airspy Mini instead? Simple: airspy_adsb currently does not support Mode A/C.
What I cannot tell is if the messages are all valid in either system, however this may help, as it shows a breakdown of messsage types, and potential errors or bad decodes.