There is a Suzuki 4WD club. I've seen their Vitaras out on tracks and they can go off road quite well (not rock hopping). I suggest they may be the best for your son - and the other members won't be deriding him for his choice of vehicle (as happened to me when I changed from a Land Cruiser to a Rangie whilst in the Toyota LC Club).
Suzuki 4WD Club of NSW Inc - About the Club

