RE: on or off
My vote is offroad. For a couple reasons. One being that with offroad, you have the better of both worlds. You can drive an offroad R/C offroad (obviously) AND onroad, where as if you get a car its strictly onroad. This way you can kind of decide if you want to be jumping and driving over stuff, or just going really fast and have good handling. So my vote is something offroad like a stadium truck.