RE: DX7 v JRx9303
Truth is, it's so easy it's surprising. And you don't have to learn where the throttle cutoff switch is. Which bothers you when you've fiddled with a number of different TXs that have them different places.
And no trickery involved. Use the radio just like it was designed. Simple beyond belief. You want to shut off the engine after taxii-in? Hold the throttle trim down and it shuts off. How does that differ from holding down an engine off until it quits? Beats me.
I got my 8103 because it's got an analog throttle trim which I like way better than a digital throttle trim, and darned if I don't like this just as much.