Been playing with the Tello off and on for about a month, more off then on. Found it harder to fly with the virtual joysticks. Ordered the GameSir before Christmas and finally got everything up and running today. Much better to fly with but noticed a very slight delay with the Bluetooth working with the joysticks......still much better than the virtual controls. I have a Hubsan 109 X 4 and Mavic Air. Air is my favorite. Looking forward to getting the Tello outside and see what it can do. Camera seems to perform well and pictures and video are coming out clear and solid. Happy Flying!!!!