If you could wait, the M4 is definitely worth the wait, thee 2014 Cayman will probably take a few more months before hitting the dealerships.
As for the GTR, it really isnt even fair to compare but the Cayman does cost about half though. Id also wait out til the new GTR comes out, a 2015 redesign is in the horizon iirc.
__________________
2012 Z4
|