If you like cars, you will love this game.
I've always been a Gran Turismo guy, this is my first try on any Forza games. First of all, the grahpics: Not as impressive as GT5 Prologue but still far better than most other racers. The car selection is pretty good, but some very famous cars are nowhere to be found like Lambo LP560-4 or Nissan R35 GT-R. Career mode is kinda disappointing compare to GT series, the main reason I can't give this game 5 stars. Customizations are excellent though, personally I think it is a good game to kill time until GT5 arrives. So if you like cars, you will love this game anyway.