My '06 C6 Z06 was quiet. The fixed roof did not creak at all. Considering the mediocre interior materials, I was surprised the car was so rattle-free. I had the car for a year and a half and put around 6500 miles on it...not exactly well used, but it was a good car while I had it.

The Z06's chassis feels reasonably solid, but it doesn't have that billet-solid feel of a Porsche. For example, when traversing inclines you can feel a bit of initial flex in the Corvette's chassis. In comparison, the 370 feels near Porsche-solid...quite impressive, IMO. That's how the Corvette should feel. I understand they want to keep the car's weight down, but a bit more chassis bracing would go a long way toward providing that high-quality solid feel.

My transmission shifted well, no problems with 2nd gear grinding, even when cold. However, 2008 Z06s got the newer trans and some of them have a 2nd gear grind until warmed-up.

This post was originally about bang for the buck and style. Both the 370Z and C6 are exceptional in this regard. I have both now and people do seem to comment on the curvy styling of the Z more on the street. Part of it might be it is a newer model and not as many are on the street yet? Personally I like the styling of the Z a little more, but not by much, both are great looking cars!

Styling wise the Z06 and Z are tie, both look great. Both have shapes that are among the best at any price. I don't think the interiors of the 2008+ C6 is bad, much better then the '07. 2008 was a excellent year for Vettes, better car and even more bang for the buck. Better steering and a little more power and other refinements. Current ones are probably even better. My '07 C6 was super reliable with the exception of the roof latch noise which was fixed. The '08 C6 is super reliable also, not a single issue. The modern Corvette is a seriously good car that is reliable and performs exceptionally right out of the box. The MPG for the C6 is great, a little better then the Z.

It's funny, I kind of notice a pattern on car forums. Z owners want to match up with C6's and C6 drivers want to match up with Porsche owners.

All are really great and exceptional cars! No car is perfect. Everyone should buy what they like, can afford, and enjoy! Most importantly go and actually drive the cars you are interested in. Many dealers will even offer extended test drives. I was on the fence between a '07 C6 and a '07 Cayman S once. I explained this to both dealers and both the Porsche dealer and Chevy dealer let me take the cars out for a couple of hours. Neither car for the test drives were new. The C6 was the owner's personal car and the Cayman S was a used '07. I got a good feel for what the cars were like before making a decision and ordering.

Someone mentioned getting bored with power? It would take a seriously good driver to extract 90% of the Z06s performance. I don't know about getting used to or bored with the performance so fast? Many people would leave a stain on the seat at 8/10ths in the Z06.

Probably the best bang for the buck is a good performance driving school.