Some aspects of 6 are better than 5. The suspension model is a very nice change from the two. When I watch replays, I see what I would expect to see in rl racing on TV. The drifting aspect is a challenge, but not nearly as close as some are touting. I have always hated the gt series for the tank slapping SnapBack. The one thing missing from the physics model is slip from the non powered wheels. I have taken my 240 at stupid speeds on gateway international raceways road course and it never pulled the snap that gt does. The game needs an individual model for each of the tires. The leading wheel slips slightly in drift, while the trailing wheel does more of the steering. I don't think that any of that is taken into account. Gt5 was easier to drift than 4 or 6. 6 has better suspension motion dynamics, but the tire dynamics are where a big part of the problem is. It's like they're linked by axle.