Dirt is a very fun racer, but lacks the customization of Forza, and the realism of GTR.
I liked how easy it was to use the Xbox 360 controller on my PC. After plugging in you rarely have to touch the keyboard. That being said some buttons could have been set a little better and it would be nice to be able to jump to the options menu while in a race. It ends up being clear that this was developed with the consoles in mind but in the end it's all a good time.