This is a typical question for a new racer and a good one!
Always check at your local track and see what your fellow racers are running. remember its easier to ask questions and advice from racers who have had experiance.
And stay with the Typical 3 brands. AE,Losi,Kyosho maybe Durango Cars today are just about created equal. its all 90% driver!
You put a Walmart brand car in Jerod Tebo's hands and id still put my money on him!