i like both of them I have both of them you only need one reciever ut you need two servos onr for steering one for throttle you could get this one with 2 servos
http://www2.towerhobbies.com/cgi-bin...I=LXJUZ4**&P=7
or
http://www2.towerhobbies.com/cgi-bin...I=LXENN0**&P=7
and just replace the entireradio system no need to upgrade and keep crappy electronics in it