Ok..I have finally read through all of the posts and now will commence to comment.
I too was looking at the Gen Coupe in addition to the Z. I test drove the 3.8 GC Track, but found the fit and finish (as well as the general quality of the interior) to be somewhat disappointing. I also found the transmission to be somewhat notchy and in need of being pushed a bit harder before it was really fun. Yes, the cabin noise is somewhat quieter than the Z..but so what, it's a sports car. While you do get a lot for your money with the Gen Coupe and they have truly improved in leaps and bounds from the early 90's Excel fiasco, the transmission really worried me. Hyundai owners are finding it necessary to get them replaced with alarming regularity. This was enough to dissuade me from looking further.
In the end I preferred the styling, fit and finish of the Z. The transmission is strong and I have no concerns about whether it is reliable enough to make it 100k miles.
Good luck with your decision.
