GM ciao
As far as onroad goes, my GM is dead. The brakes are crap! I am speaking from someone who has been using GM for 2 years, so I know pretty much the ins and outs with this speedy.
So many times I crawl my car slowly, like less than walking pace and I cannot even stop on the grid without overshooting. Yes, I have played with ALL brake settings. In a high speed section on our track, braking to nearly a complete stop, I am giving up 0.5sec on 1 corner alone, as I need to brake alot earlier than others, and even then I'm overshooting turns.
I also cannot use a setting on mode 9, unless its less than 20c ambient temperature, otherwise the motor will overheat. Yes, I have played with all the different FDR's, swithpoint, frequency etc. I can then put my tekin esc back in, and my motors come off 20c less!!
offroad, this esc is perfect, the smoothest speed control I have ever used. But onroad, brakes are not efficient, motors are running hot.