Super: Turismo, Zentorno, Adder (depending on the track. Turismo with best handling, Adder with best max speed, Zentorno in between(as is Entity, which I feel will lose to Zentorno).
Sports: Feltzer, Massacro, Jester, Elegy, Carbonizzare (This class has a lot of almost equally good cars, Feltzer is the only certain one in my racing carage)
Sedan: Schafter, Tailgater (I prefer the Schafter, but this is close)
Coupe: Exemplar (I also have the F620, which is a beautiful car, but loses (not much) to Exemplar)
Compact: Blista, Panto
Off-road: Sanchez, Dune Buggy (Sanchez is better, but Dune Buggy can take hits better, so depends on the track and players, Bifta has horrible handling, but is fast on tarmac (I feel it's in a wrong class).)
Motorcycle: Akuma, Bati 801 (depending on the track. Akuma for handling, Bati 801 for top speed)
SUV: Baller, Huntley S (Baller for handling, Huntley for top speed)
Sports Classic: Z-type, Monroe (Z-type for top speed, Monroe for handling)
Experience: total of 1986 races driven.