If I had to pick my favorite thing about 'vettes in general over other high performance 2 seaters is the magnetic select ride control. The ZR1 has it, and the Z06 does not. Plus, the Z06 suspension makes the car feel like it's on rails - steel wheels on steel rails with no give! The ZR1 is much more pleasant to be in for that reason alone - good ride and great handling together. And lastly, I just about crapped myself when I drove a ZR1! It's fast enough for me, and I'm a speed freak!