[thstone]

The standard advice is to buy the newest and least mileage Porsche that you can afford. Also, if at all possible, you really want to avoid the IMS worry.

Thus, it would seem that the choice is between the 2010 S model and the 2014 base. I'd recommend driving them both and then decide which you like better. The additional power of the S might beat out the newer base model. Or it might not matter to you. The only way to know is to drive them.