Great game, but i think people got too overhyped about it.
My major flaw is the lack of cockpit view from the GT4-imported cars that are premium. Also, i hate that hardly nothing is unlocked at first, in contrast to forza 3 were you had everything unlocked to use in arcade mode. This means that some people will quit on it very early. I also hate the long load times, they piss me off. Apart from minor flaws, this game is still top-notch fun that guarantees you many hours of gameplay, and the best racer out there. For now.