Hey guys, I finally picked up a very cheap xbox 360 just for forza 4 (cost of the xbox 360 plus forza 4 is about the same as a new game), and I was wondering if there is any reason to pick up forza 3 ultimate edition? It costs about the same as forza 4 base edition. Are most of the cars in forza 3 ultimate in forza 4 base edition as well? As well, are the physics more "dumbed down" in forza 3 then forza 4? I heard that forza 4 had more realistic physics then forza 3.