Did you not drive the Cayman S before buying then? I drove a boggo Cayman on track and found it very similar to the 370z handling and performance wise, and drove the Cayman S on the road and didnt really find it any different to the non-S, certainly not enough to justify the premium for it. For around the same price as a few year old Cayman S, the 370 just won it for me as I could get one brand new. I wasnt wholey convinced I'd made the right decision though until it had the new exhaust and UpRev, then once broken in it feels great