Interstate driver = Z
Fun highway driving =S

Both are great for what they were designed for - different end users.

 

WOW, its funny....I thought I was alone in this. I felt the same way, powerwise, the Z obviously won me over, but it came came down to this for me. What made me feel happy when I was in it driving around? Hands down, the S. I cant explain it but it was just a great feeling like I just wanted to keep saying "Hell yea!"