I had both the Mezjlik 20X6 and the APC 18X6.

The mezjlik 20X6 would pull my over weight 14.5 pound Extra up out of a hover. The 18X6 APC would just hover and not pull out.

The 20X6 had lots of torque going on. Didn't want to give it full throttle from an idle too close to the ground, it would try to roll the plane over and vertical lines required right rudder correction or would have needed more right thrust.

Brian