I have one and I can say it is worth it. I run mine in a TC with Medusa 3300kv, 5s lipo. Easy 90mph car. I have the power to go over 100 easy, but I am still trying to keep it on the ground. The MMPro is sick I tell you, SICK. Oh and the CHEAT deal they are talking about? Yeah it works BIG TIME. You can gear for acceleration and still get all the top speed. Or gear for top speed and still get all the acceleraation. Of course this only works with sensored motors, as sensorless is already optimized by the controller anyways.