<<...you would think a $1200 radio would have at least as many features as an 8103...>>

You would, wouldn't you? I have had several discussions with shall-remain-nameless Horizon employees about this. My gripe is opposite of yours. I have the heli version and I miss some simple airplane functions.

Anyway, the company line is that nobody wanted dual functions when the 10-series radios were being developed. The real story is that they never increased the "computing ability" of the radio once the PCM 10SX was released. All they have done is move features around. A quick look at the menus of the 10SX, 10SX II, and 10X will reveal that clearly.

Welcome to helicopters.

Steve