that is personal preference. I have both. The SCT seems to drive more clunky, but it takes a lot of abuse. The ST is faster, handles better, and jumps better. I prefer to race with the Stadium truck and bash around with the SCT.
4wd will always give you the best handling. 4 drive wheels allows you to start quicker with less wheel spin and while turning, the front wheels help pull the car in the direction they are pointing.