I sent my RDS8000 with broken wire back to Airtronics for repair and they did the job for free. Hopefully the replaced wire wasn't of the same batch as was used to make the transmitter originally !
I bought an SD-10G a couple of years ago. It has some features that I like. And yes, I did look at the way the wires are routed to the stick gimbals. Entirely different design. One of the things I didn't care for was the greater thickness of the new transmitter. I've got small hands and didn't feel like I had a comfortable grip on the box. Jack Albrecht (Airtronics technical advisor) encouraged me to try a neck strap and I have come to like it.
Dick