The Cayman is one of my favorite cars. If money were no object I would be driving one right now. They're both big time head turners and quality vehicles. But:

Cayman = $50,000. +
Crossfire = $21,000.
Save $29,000.

You could buy a Crossfire coupe and roadster new and use the other $5,000 to pump up your 401k.

You could also be like Warren Buffet and buy neither one and pump up your investments $50,000. but we all know that's not an option for us car enthusiasts.

If you think that the Crossfire is expensive to maintain the Porsche is even more so.

Crossfire = close enough.