I am a newby to flying less than 2 years I put an Eagle Tree in  a profile plane, it has help me build a skill set with out crashing as often, started with gains high and steadly reduced them also fly with the gyro off also, useing it as a training aid has helped me, my goal is to be able to everything as smoth flying without it and I'm getting there.  Everyone at our field knows I use it, I do not act like or say that it's all in my fingers, they can tell when it is turned on and turned off  LOL.  It has saved my plane a time or two I'm sure