Originally Posted by RaV3N
Either size is fine for me.
I think best and fastest are two separate categories. To me, best means most appropriate for the track. For best I would say MTX4R, NT1, etc. But really find what the guys at your track are running and emulate that so that parts support, help, etc would be easiest on you.
Fastest is more of a drag racing thing, so Traxxas or Shumacher may be a better choice. Although the Power Racing and Inferno GT2's are good cars as well.
Just my two cents.