Speaking from past experience, LRP/Nosram, Tekin and GM have all been good speedies. My last 5-10 speedies in the brushed era of motors were LRP with no issues.

In the brushless era, currently using LRP SXX V2 Comp and TC spec in 2wd & 4wd off road, with no issues at all. Just a guess and a theory I have with brushless ESCs compared to brushed ESCs is. In the past, if you werent fast enough, you'd go down turns in motor, try higher quality brushes, get better Voltage/amp batteries, play with gearing and FDR. All of these things wouldnt raise the ESC temp by 5 degrees.

Now with brushless, one of the first things people do if the car needs more speed is, increase the boost on the speedy, increase the timing, FDR. All putting increased load on the speedy. These days the speedy is required to do a lot more compared to the past where the motor would, drag break, virtual timing, changable throttle bands, and the list goes on. Using the theory of a computers CPU, if you overclock it and play around, it runs hotter and the life is shortened, unless you have the right cooling, ventilation ect....

Any of the top brands are fine IMO, LRP, Nosram, Novak..........and if you have a problem with it, the manufactuer would be more than happy to fix it, especially within warranty