Would you buy a Cayman R or a used Carrera S.?

I agree 100% with designergene the cayman and the 911 are two different sport cars it's like compairing the new camero with the corvette; both cars have there strong and weak points so it depends on the appication your going for. Now a 911 is oviously more suited for the track and I think the cayman R will only be a few seconds slower. So to answer your question go for the 911 you might get bored the cayman anyways since you know how a 911 feels.