The google provided Revrobotics page is off limits for me, all my protection programs went berserk on that site...

For batterydrill powered featherweights Team RCC uses the German IBF series of dual ESC's.

For stronger drives, it's the BotBitz/Ranglebox TZ85A.

In the past it was the Robot Power Scorpion XXL, Ilyama version.

For heavies we use the tiny Sidewinder, with an Ilyama modification.