If I wanted a economical, zippy, quick, nimble little car with the occasional autox/road race trip. I would choose the FRS/BRZ .
In terms of Grand Touring performance right out of the box with brute power to back it up. I would choose the ZL1/1LE, Z/28.
I like the lightness/quickness of the BRZ/FRS cars. But my heart sits with the Camaro thru and thru until a new RX7/Supra/NSX comes along....