Just speaking from my own experience, when I changed from NTC3 to MTX4, I noticed a pretty big change in the way I drove. Seemed to me that the 4 took the corners better and, (I know there's a LOT of guys out there that will disagree,
) but I didn't seem to hit the boards as much. I personaly am happier driving the MTX4, I'm not repairing it as often as my NTC3. I do plan on passing it down to 1 of my sons though because it's still a very fun car to drive.