Please see my post about the Korg.
https://forums.flightsimulator.com/t/axis-and-ohs-help-and-questions/196415/266?u=winningyard5086
I decided to go with Axis and Ohs (AAO) because of the flexibility it offers. Oliver is very active with the Sim community and has already contacted me on using the rotary encoders with his product. Another advantage is you configure/bind all the controller inputs through AAO and no need to go through brain dead MSFS2020 controller settings page.