I'd rather drive the Cayman (S!), but prefer to own the Z.
The Cayman (yeah, the redesign is MUCH better) just seems telepathic, and almost perfectly balanced in any turn. I had test drove a one-year-old Cayman S while shopping for the Z.
The price tag ($60K+!) and rental-car smell inside from the previous owner made my decision; I drove off my Z with 11miles on it (+new car interior smell
) off the lot for almost half the $$$.
If I can get the kids out of private school; I'd pony up more cash. But for now, Z seems the best bang for the buck.