MGM has up to a 400 amp, 64 volt version. I'm currently using a MGM controller in my 1/10 TMM-7035-3 (70 amps, 35 volts) in my TLR 22T. I'm happy with it overall. One issue I've had with it is the motor temp went up using the same motor I ran before while in sensored mode. In sensorless, temps went right back down. I think it has to do with the timing, but swapped the motor out for a different option that I was looking for an excuse to try anyway. I've since stuck with the option I tried as it suits my style better. Amazing ESC though.

http://mgm-controllers.com/index.php...llers-x-series