Wouldn't this esc be better suited to those brushless motors? Its unsensored, like the motors are, and it can take up to 6s lipo if I understood correctly....reading through the feedfack on this esc one guy mentioned that it can also control a brushed motor... don't know if it's possible at all.
http://hobbyking.com/hobbyking/store...s_Car_ESC.html

I'm really tempted