I must say the Prologue version is awesome. The car control is closer to the reality and the car sounds are closer to the reality as well. Well I haven't been playing it a lot lately because I haven't got time to play it. I'm truly happy to be one of the fortunate gamers who owns GT4P 
The graphics are the best in GT4P...not to mention how cars were detailed so closely but I found the cars were sometimes too shiny for some reason. And during the School mode when I get the car after the tests were conducted I think the people were little bit too big compared the size of the car. But anyway GT4P is huge improvement over previous GT sequel but I just can't wait for full version of GT4 for next year. Now back to game...gotta play it now
The graphics are the best in GT4P...not to mention how cars were detailed so closely but I found the cars were sometimes too shiny for some reason. And during the School mode when I get the car after the tests were conducted I think the people were little bit too big compared the size of the car. But anyway GT4P is huge improvement over previous GT sequel but I just can't wait for full version of GT4 for next year. Now back to game...gotta play it now