RE: Trex 450XL and Spektrum DX6
I'm using the DX6 with my Trex 450XL. I have the mechanical collective and it works just fine together. I had to spend sometime at the LHS so they could go over some functions, but I installed the receiver and servos myself and was actually flying right after I finished the build. THey just helped me fine tune my adjustments because I wasnt quite spot on with my sub trim and pitch curve stuff, but I would say its a good option as far as the radio goes.