because we don't see any thing like voltage, temp monitor in MX-3FHSS
if there isn't any stability issue in MX-3FHSS then it is way better then Spektrum controller, I like MX-3 the best,easy to use and build solid. I goes with Spektrum only because 2.4ghz and build in fail save(which unfortunately is like 0.7 second delay
) let see if MX-3FHSS has build in fail save.
maybe you should consider Nomadio if you want telemetry