Answer
Now that porsche announced the 2007 boxster s will be getting the 3.4l engine (like the cayman s) there will be little difference in performance. it will come down to personal preference and usage.i currently have a 2002 boxster s and love it!! however, i purchased the car in spite of the convert, not because. my main goal was a true mid-engine sports car. the choices were minimal: acura nsx ( much $$$), toyota mr2 (not enough power) and the boxster.if i were to walk into a porsche dealership and have my choice of a 911 (non-s), cayman s or boxster s, i would be driving home in a cayman s. i like the way a mid-engine car handles and the coupe would be much stiffer than the convert (which is already pretty stiff!). do i like the convert.... heck yeah, but since i like to track my car and listen to the beautiful sound of a porsche engine, the nod would go to the coupe which is better for both of those.