You have to break it down by mod. So in order starting with the best: 37GP Auto Union (rF1 mod) Spark F1 (rF2) WTCC Chevy Lacetti (Race 07) LolaT280 (rF2 mod) BMW CSL (GTR2 P&G) Mercedes SLS safety car (rF2) Porsche 906 (rF1 Historix) Skip Barber (rF2) Porsche 911R (rF1 Historix) Everything else is a waste of time. You're welcome.
I never got into GTR2 all that much. I did a couple online races, I did the driver training and some offline races. It was always a good game, I just kind of missed the boat because I was playing Race 07 for many years. The FFB in GTR2 was always terrible for me. If I stuck a spade in watery mud with rocks and tried to turn it, that's what the FFB feels like to me in GTR2. None of the gmotor2 games (except GSC) have good FFB IMHO. With rF1 Using RealFeel I could tweak to get great FFB every now and again with certain mods at certain times but it was so hard to get right. R07 always had OK FFB but never great... or even good for that matter, just OK. rF2 nails the FFB from the first time, everytime.