Very nice review Heli Pad. Thanks.
Heli Pad shared the result of binding the X1 to a T9x radio. Worth a reread.
As an experiment, we bound it to a V949 Tx, and it controls it just fine. At 20% and 40%, the X1 hardly moved. At 60%, it felt like Low on the X1. At 100%, it felt like Hi on the X1. No accidental flips. The same flip button on the V949 Tx worked as expected on the X1. Then, we bound it to the Turnigy 9x. Woo-Hoo! It felt like a completely different Quad. It was very aggressive! It banked turn beautifully! It felt like it was flying at 125% or 150% of what it was doing before! I love the way it handled. Give it full stick and this thing tilts so much that it wants to go vertical!
I used the same model memory as the v929/v949. So the channel assignment and reversing are exactly the same between those quads.