IS Pro,
Here's a good thread with lots of opinion and generally reasoned argument.
http://www.caymanclub.net/cayman-cha...-c-extras.html
I suspect the search engine didn't like the "s" hanging off of your Cayman S. I reckon if you omitted both Cayman terms and tried again you might do ok.
IMO, this is a religious discussion. Both cars are great; of course, I have a CS. That might not have been the most rational choice, but I'm happy as a pig in slop.
Oh, and here's another thread:
http://www.caymanclub.net/cayman-cha...-cayman-s.html