BUY A CORVETTE!!!
Sorry... still waiting for Porsche to respond about my RMS leak... it's been a week and I'm still driving the courtesy vehicle and my car hasn't been touched...
I wonder if they are waiting for me to give in and pay for the repair myself?
In regards to the topic at hand I personally bought the S for the extra power and handling which is noticeable on a track. If the primary purpose of buying the Boxster is for looks and non-competitive driving fun the base model will foot the bill. I doubt I would ever need the S for anything I would do outside of a track event. For me the warranty would be nice but I plan on keeping the car past the warranty and will risk having to pay for repairs at some point. If I was that concerned about a warranty I would buy a new(er) vehicle, extended warranty, or whatever gives me 2-3+ years of coverage.
Either way, you'll enjoy yourself!