I only run off road and do not know if this is a good choice for you but check it out. I do know it is a WHOLE lot better then the poor HPI .15 FE as I had one of them in my Rush when I got it. All so the price is right on the OS .18 CV-RX right as $100.
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGGP6