I have driven a S2000 with 240 HP, traded that in for a 350Z with 300 HP and loved the difference in power, and then traded the Z in for an 07 Vette with 400 HP, and then traded the 07 Corvette in for my 08 with 450HP. My 08 with 450HP is more than anyone would ever need. I am picking up my Cayman S on Friday and will probably miss the extra HP that the Corvette has, but I am looking forward to a classier car with many other benefits over the Corvette. Considering the weight of the vehicle, my guess after driving several cars with a large range of HP and differrence in weight, I would love to see the Cayman S have around 375 HP. Possibly a turbo charger down the line would provide that should I feel compelled.