I have to agree with Mike on this one. I picked up the game last night from EBgames (preorder) and I got to delve into it for a good 2-3 hours before having to sleep for work.
I did the same thing right out of the box, turning on full FF and multiturn support as well as all the Pro handling physics and damage. I didn't monkey with the saturation and deadzones as the demo seemed to work just fine with the defaults. Finished setting all the buttons the way I liked them on my DFP rig and hopped right into world tour mode.
I started the profile on the normal setting but after just killing the first few races I restarted on the hard setting. Its made all the difference so far. I'm still getting acclimated with the physics but after a few laps it seemed I could do a decent job at hanging with the top 1-5 cars. I only had the chance to play with the uber-light GT1 cars that they give you the option to start with so most of my initial view is based on that.
One thing that doesn't stand out yet is the weight transfer and that may be soley because of the tiny light GT1 cars. Other than that however I think this is everything that GT4 could have been, don't get me wrong. I love GT4. But.. . A 21 car starting grid, damage modeling, and AI that you can actually pass on the inside or outside of a curve that will give you the line as opposed to knocking you into tomorrow. They are pretty aggressive depending on the situation, I noticed a good bit of blocking and I did have a few moments of having to hold steady through corners with a little bumping from the back at slow speeds but I may have slowed a little to fast, again early impressions after only a few hours of playing.
I did spend a few minutes with the first rally and it seemed much less responsive as far as the steering went and driving on gravel felt like glass

But I really didn't give myself a chance to get used to it as I needed sleep.
I'm sure that someone will get a chance to go more indepth with a review but thats all I got for now. I'm counting the hours before I can go home and play more.
