I have 2 of them. At first I thought they were great. Never glitched at all. Then our track held a big race and during practice my truck was going berserk. I traded out everything. 3 motors, 2 speed controls, 2 servos, 4 sets of crystals, 2 different M8, even switched out the receiver with the other Hitech one I had. nothing worked. finally another racer lent me a Novak XXL and all was good. I still have no idea why it did it. Works great on club nights still to this day.
I won't buy another one.