money!!!
ya, i had the same interests as you dig r/c, but i got out as soon as i started pricing things, high speed metal geered servos, one for the throttle, and one for steering, the thign i considered was a xxxnt sport, but i usually don't like the sport kits, but i love my xxx-t mf, first truck i got out of novice, and i had a xx-4 we that i ran in novice before that.