I have only flew a few times and my instructor showed got on me about the thumb method. He showed me the pinch method. I noticed a lot more control of the plane with the pinch method. Not as much jerkiness in flying and a lot less correcting needed to be done with the pinch method. I have noticed on the simulator too that I have more control of the plane with the pinch method. I am not adding rudder or ailerons when I shouldn't be. I have noticed more so on the landing the difference in the methods