Ive got a Tenshock SC411 and Xerun esc at the mo and its awesome, ive run a RX8 and SC4X 5.5t in the past and the cheaper setup owns the Tekin all day long, if money aint a problem then a RX8 and Pro4 is the setup to have , but ill be sticking to my Tenshock/Xerun for a long time yet