I know the Grand Turismo series already from the PS2 and GT4 have since played out. For me the whole GT series is by far the best racing simulator on the market. With the purchase of a PS3 was clear to me that I would continue playing the GT series. I then GT5 Academy version with its additional features at a very good price-performance ratio and discovered they ordered the same.
I play GT 5 for a while now and am thrilled by the diversity of cars, tracks and challenges. Sure the game is also its weaknesses, such as has the sound, but that does not fall big for me significant. After all, it's still a game.
For a great game, one of the very long has something when you're getting into it, there is of me 5 stars and a buy recommendation.