The more I think of it...I think the SL63 is a great cruiser car. Makes a great burble noise from the exhausts...you can put the top down when you want... The type of car you wouldn't mind driving late at night with the crisp fall air...with the air scarf on.
The ZR1 is the car I would take for days I really feel like hustling...and if I was doing some track days. But then again...no worthy tracks near our house to really exploit its potential.