My Losi 810 came with a spektrum radio. I used to have a lot of trouble with it until I noticed inside the receiver had dirt and moisture. And some of the traces (wires on a circuit board) had corrosion build up connecting some of them together. After cleaning the board by scraping it with a hobby knife and electronics cleaner it's been working a lot better. No more run away car. That was 18 months ago. But it still has a glitch when I give it throttle the steering servo moves a few degrees both ways vary rapidly. Like what I would call a glitch issue. Using a losi servo for throttle and a spektrum for steering.

Having said that I have a suspicion most of the issues lie in the receivers from contaminants.