I wouldnt worry to much about how many ppl are switching from one car to the other. At my track its pretty funny, Xray fk05 came out 8 guys switch to it, JRXS comes out 8 guys run and buy that, Corally(which was out for awhile, but got a huge push and its a pretty car) 10 ppl switch to that, T2 comes out and 8 guys switch to that.
I really think it comes down to whats cool to have, and new=cool. Everyone wants to be a part of something, or in the in crowd so ppl float from car to car.
What I tell everyone that is looking to get a new car or upgrade is what ever company you pick, stick with it. It takes me over 6 months to learn a new car and everthing it can do.
When the Corally came out I was very interested in getting one just to be with friends that switched and work with them to learn the car.
But the simple fact is, everytime you switch or upgrade its an easy $1000 with the kit, parts and hopups.
Nick Martinez