I don't mean to fault people in their opinions, but someone buys a good radio with the functions to do want he wants and he's told forget it. The dx-7 can also have two channels for the ailerons. This give him diff and expo. Y-harnesses are just a another point of failure. Ask me why i don't use a 4 channel with y's in my jets or why my GS planes use 12 channels to fly a 4 channel 40% plane with  11 servos. But that just me. I also like power steering and air in my car too. O yes and power brakes, and the GPS so i don't get lost. I never did like looking at a map. And my wife said i wouldn't ask directions. Dennis