i think the gt4 version is better than the xbox version. i remember a couple of years ago a redline gave away a dvd with some nurburgring action on it which included a full lap in warren kellys escort cossie and after playing gt4 watching the dvd i could say what corners where coming up next. but i must of done over 1000 laps on gt4 as i've done the 24hr race 3 times without using the b spec mode i played it on my mates x box and seemed to keep getting lost, it seemed like a totaly different track