Rumble is crap.
Force-feedback is the only way I can ever play a driving game now, it's just sooooo good
The tactile feedback is killer and you really have to fight the wheel when you are in a high-level race with fast competitors on some of the roads.
The single-player missions help develop your skills so I am making sure I complete all of them
Also, ensure you complete ALL of the car delivery missions, perfectly if possible. Lots of easy money
The extra $40 k really helps for parts and upgrades.