Have had many many flights on my Avistar with a 46FX, 11X5 APC prop, and it gives the best of two worlds. Enough power to really play hard, and that 46FX will idle down very nice for slow flying and landings. I have started to help new fliers and it's a good combination, they just run the engine 2/3 power and it flys smoothly. To balance the plane I have a 1400 mah battery tucked under the control rods, behind the first former to the rear of the servo's. I also but 3 inch wheels on it to help the landings on our grass field. Hey - Enjoy