RE: Futaba FAAST vs Spektrum/JR Spread Spectrum
For the battery TM you don't have to monitor the screen on Hitec A9. You can select a low voltage level of each plane and the system will be if you hit the level. For me it has be fast enough in reponding to catch transient voltage drops as you go to fulll throws on servos or lots of rudder in knife edge.
Not a do-dad to me but a very useful function especially on EP models.
Jim D