Yall have had WAY better luck with those two brands than I have....... I had a tekin rs gen 2 a while back and it just randomly died...... Never plugged in backwards never overheated..... Just quit........then I had a speed passion 13.5 that I took out of one car and put in another..... No wires unplugged or anything same esc and turned it on and the motor puffed smoke and died when I turned it on to test it...(it worked fine in the other car).. Still don't know what caused either of these.....