I have no experience with the ST. But my friend has the 2.5 Rustler. And I got to drive it several times. All I can say is this thing is insane!
Couple the power of the 2.5 with a 5 lb vehicle, add a open planetary diff and you are in for loads of out of control fun.

This Rustler will whip a unexpected doughnut on you in the blink of an eye. The engine hits torque peak at around 25 MPH. This makes accelerating quite interesting. If you nail the throttle too hard, depending on traction, one of two things will happen. One, the Rusler will whip a doughnut. Or two, it will accelerate in a fairly straight line. But when the engine starts nearing the torque peak the front end will start lifting up. Wheelstands at 20 MPH. :stupid:

Anyway I think the 2.5 Rustler is a lot of fun. It keeps you on your toes trying to keep it under control.

Now my friend doesn't think the Rustler is insane enough. He is now building a Nitro Stampede with a Sirio 3.0.
I can't wait to drive that one.

LT