Additionally, called Horizon Tech Support about the frame rate. Thier answer is that the "higher end" receivers will bind at less than 11ms (some as low as 5.5ms). The 'Sport Receivers' all bind at 22ms. This is probably fast enough for most of us...specifically on a low-grip dirt track. The good thing is that when the next generation of receivers come out, I won't need a new radio. The one remaining concern: battery life, I addressed by purchasing a 2nd transmitter battery.

Would really like to understand the driving modes. I assume they are like flight modes in my air transmitters. Hope there is a YouTube explaining these.