I'm building a ifs wrexo the stock wraith 20t ain't cutting it so I'm looking to upgrade...so my ? Is if I go with a brushed motor what is the best esc? And if I go pro4, roc412, or some other sensored brushless what esc? I figure if I go brushless I can get a combo and always upgrade the motor to a better sensored one if its sensorlsss right?