Originally Posted by BalanBro

My brother has an ls3 c6 with the z51 package. The vette is very stiff, and he commented that the ride in the 370z was much smoother. I think it really is "just right". Whether or not suspension compliance really matters is a personal thing, but the Z is typically a better daily driver than the c6.

Some additional points to note:
C6 has much better visibility. It's like being in a bubble. The 370 has bad blind spots. Probably one of the worst I've ever been in.

Obviously in terms of straight line speed, it's no contest, especially compared to the ls3. A c5 (non z06) is closer.
Both cars are relatively noisy, but the 370z is a bit quieter (until you drive over loose dirt/gravel, then it sounds like your wheel wells are being sandblasted).

If you are getting factory nav, the vette is LAME (with a capital for all 4 letters!). The nissan unit is infinitely better.

OnStar is LAME too.

The Z's seats are fantastic.