I bought a used US and had a new DX-7. The gent I bought it from recommended that I trade the DX7 (it was brand new) for a JR9303. The RC shop took it back and I am glad they did, the 9303 programming is very easy. BTW, it has an OS120 on it and it is a beast, but a lot of fun to fly. Here is a video of the ground test of it when I was done programming it. Don't forget to test the radio with the engine running!
<span class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: 10px; white-space: pre; ">http://www.youtube.com/watch?v=VnyrYUeXjpw
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