My first GT3 I bought 7 years ago. Just a few months ago, it stopped binding to receivers. I have yet to take it apart, so it may simply be an antenna wire issue.
I have had a GT5 for 7 years,cand live it. It's a nice radio. I was actually thinking about grabbing the Radiolink, just so I could see what they are like. Not sure about that now.
Until they develop an actual racing based RC like the Losi's, Kyosho's, and Associated kits, I highly doubt that will happen. And they would likely price it up there with the Futaba stuff, and well... 🙄