i also have a rc18t ft kit and i picked a tekin 6.8k with 2 and 3 cell lipo packs. i use a dynamite vision peak ultra for a charger and it works great. i bought one of the $25 digital servos from b-p-p(also where i got my lipos) and its top notch, no issues at all. overall i am satisfied with the speed of the tekin 6.8, which is the equivalent of a mamba 6800, but i wish i had a little more for bashing and when i take it to the track i think it is a little much. even on a 1/8 scale offroad track i cant top it out and its really hard to find traction.