Originally Posted by bds81175

Castle MMP. The ESC is somewhere around $125 and the ESC will run everything: sensored, sensorless, steam pressured, solar powered....well maybe not the last two. I own a couple and have been really happy with them.

Viper also makes good stuff. I've got a VTX10 in my T4 right now that I am very happy with. Much smaller ESC than the MMP and I prefer the cool running, smooth sensored Viper motors.

Also check this out: http://www.hobbypartz.com/07e-combo-sc-a.html
They are out of stock but you can't hardly beat the price. I've seen folks race these at our track with good success.