PL,
Regarding the Cayman S, all specs are the same as the Boxster S except price ( $59,100 ) and weight ( 2954 lbs ).
Adam, the reason I was using the Boxster S and 911 coupe is due to price. 911 cab puts you in the $80k price range, $25k more than the Boxster S.
Thanks for all the feedback, guys ( and also to cfos and flyadesk for the rant on specs

).
Nick