from my point of view, LFS has amazing physics. the cars look bit like real cars, but then, there's still sign of your valve cover blowing up to bits when I mis shift with my G25 and revs do a not-so-nice visit at the 14k range in a car that has redline at 7k.. engine just loses power. LFS, RBR, GT4.. that's my top three. and when GT5 comes out, I'll add it to that list too. and I've played forza and tested forza 2 demo at shop, and.. well, it's on ridge racer level IMO. ultimate ricing simulator is the word I use to describe it.