RE: Which truck to get?
If your main area of use is on-road, then maybe neither of these trucks would be best suited for your needs. Both the Genesis and the Savage are designed to be thrashed in an off-road environment, if you are only looking for occasional off-road use then maybe something like the Fun Factor would be more suitable. It has a much higher top speed than either the Genesis or the Savage and is equally happy on or off the road.
If you stick with your original two choices though, I honestly don't think you would regret your decision, whichever one you go for. They are both fantastic trucks.