Originally Posted by Jay7
Best way for me to explain the difference between the two bodies from my experience would be, the 909 keeps my car and setup planted and with some understeer and very stable. R15 frees up the car for more steering and doesn't feel as planted to the floor as the 909...
The above is very well said, I agree with this completely. I have used both bodies extensively and myself prefer the P909. The R15B is more aggressive and I believe you could turn a single faster lap with the R15, but your overall run would be slower because it is harder to be consistant lap after lap with the R15.