Are you limited to about $300? You could probably find a better kit on ebay, and get a decent set of electronics and motor/pipe.

There's nothing tragically wrong with those 3 cars, but they aren't nearly as good for racing as most of the kits available today. I suggest you go with a Hyper 8(or 8.5), Losi 8, Mugen or one of the better companies. Those cars are great handlers, and very durable.