Gotta be the HSV, R18, and GT40.
Please tell me you're talking about the regular version and not the AE edition.GT40 Mk I. Amazing fun to drive and even sounds quite good.
Are they not just paint jobs? I have them all, but they don't seem any different than their counterparts otherwise.
I love the HSV's body roll! But the engine sounded like a buzzing bee on steroids... :/The HSV takes the cake for me; it helped me win LOTS of International A races thanks to its sublime handling. I haven't tried all of the AE cars, however.