If you're looking to go fast, get the 4 tec, it's a bullet and at 60 mph, the NTC3 just cant keep up. If you plan to race and occasionally win, get the NTC3. It's race proven and still pretty fast at 43-46 mph.

If you look at race results in any of the popular RC mags, you'd be hard pressed to find anyone racing the 4-tec competitively let alone winning anything. The NTC3 is built for the track while the 4-tec is built to have fun while going fast.