RE: RS4 MT2 rtr, Firestorm 10t, or nitro rustler 07?
I have a MT among many others and if you get a MT DO NOT GET THE RTR! The only MT I would consider is the kit as the RTR has MANY weak points that the kit address. All so the engine in the new MT kit version is MUCH better then the T15 in the RTR. Out of what you have listed I would go with the Firestorm but true 4 wheel drive is much better then 2 wheel drive as far as handling and going places a 2 wheel drive will not. But normally 2 wheel drive is faster.