Finally got my KK5040 props in the mail. Combined with moving over to the QAV-R frame after breaking the bottom plate of the RXL, a good thrashing was in order. Nothing in here that you haven't seen before, but view counts show that people REALLY like the stick overlay videos, so for those who want it, enjoy.
I really love that, with this copter on these motors and these props, I can thrash it around with impunity. I can whip into a 180 and give 100% throttle without fear that I'm going to run out of authority and drop an arm. The motors and props are super responsive! This is as much a function of the GREATLY reduced weight of this copter compared to my Strider, as it is a function of the motors and props themselves.
If you compare this video to "Gravity is no Impediment," you'll probably see that the copter is not quite as fast on the KK5040's as it was on the HQ5x4x3's I was using in that video. But for $0.25 per prop compared to $1.30 per prop, I'll take it.