What if you add the "M" roadster into the mix? That is my issue. Boxster S or M roadster. I've driven both and love them both. The SLK is out for me due to lack of cargo space. The M doesn't have much more and the Box has the most. But the box is the most expensive, the more popular ( I see them everywhere), and probably depreciates the most. But boy does it handle well. It can't top the M in straight line power, but around curves it shines.
What do I do.