uummmm x-ray is good but.... When you talk about those car there is no ultimate car.

If the budjet is not a probleme i would say a Kyosho MP9 or losi 8ight 2.0 with 400$ smart diff.

I will probably considere the new mugen mbx6 but I don't like the carbon shok tower.

Now the engine. So much good engine this years

-1-.21 rb c6
-2-.21 os vz-b v spec tune
-3-.21 novarossi +4

RB give you more mid and high, os got a lot of punch, nova give you insane run time with the turbo plug

all good choice[8D]