I took the MIxuko from 2.6.1 and OneShot and 2 kHz to 2.7.0 and 4 kHz, and the results are staggering. I'm not sure whether the video conveys just how great this copter is flying. And the propwash handling is absolutely stunning. I'm murdering the throttle with absolutely no decorum, and it barely gets out of line at all. This is the best flying copter I have ever flown.