i agree with j_blaze i had a towerpro for throttle and brake. Once i was driving on a parking lot my gas reacts very slow and holds throttle for a while and after i was back home the servo died so i stopped at the right moment because i had no failsave and if i didn't stop my car had hit a truck [X(]. So just buy some ace's i did that too and you have a good combo of servo's and they are very fast and strong. (sorry if my English is bad)