Flysky i10. Easiest radio I have, and I also have the 9X and 9XR Pro. It has a screen like a smart phone with a help section that's top notch. The radio will actually teach you how to program it. I use it with my Jagdtiger and couldn't be happier with it. It also has telemetry so you can see battery voltage at the TX, and also stuff like motor rpm and temp.
https://www.youtube.com/watch?v=bMPZFfLibb4