MadMac,
Watching Fast and Furious is more true to life than GT Prologue is to actually driving a car. Remember this is supposed to be a driving sim, suppose it is OK if you are looking for something that resembles a dodgem car!
Trouble is I suspect (regardless of what others have been told or think) that GT5 will be more of the same. This is simply because the more realistic it is, the harder it is. GT5 will be a mass market game, which needs to appeal to all and sundry.
Try something like Live for Speed on the PC with a G25 Steering Wheel, clutch and H Shift manual gearbox. Then tell me how realistic GT is!