i fly 3axis gyro(s) for a while now, more helpful then a 2800 dollar transmitters, that is for sure. Actually some of them programmed right you would not even need expo anymore and could fly with 6 chanels basic straight forward Transmitters, but always good to have an option to calibrate centers and endpoints to prevent unwanted drifting. I have some good results so far with Acro up to 30cc and i am happy with them, Jet's is not my territory anyways so i cant tell anything there, but learned a lot from flybarless Heli programming and that helped a lot
Some one ask me should i Gyro ?? yupp, why not, what works is always good.