I've been flying one in an EDF Panther this past season. It makes hand tossing a breeze in 2D (wing leveling) mode. In 3D mode it corrects for any wind disturbances and takes a lot of work out of flying, also helps landings.

I bought another one and put it in a turbine jet. Only flew it a few times but it worked just as well. The only drawback is that it will support only one elevator servo and one rudder servo unless they are Y-ed together. Also follow the directions to supply more amperage to the servos if using higher torque digitals.

By the way it's a 3 axis gyro stabilizer, not an auto pilot.

Joe