The Z is not a Mustang, and I'm not in any way ashamed to say that.
I'm buying mine with the confidence that I've driven these vehicles before and others of similar comparison and I still think the Z comes out on top.
In regards to Nissan, let them ask what they want for a price. If reviews and public opinion matter, then the car will lose value if they think its over priced and you can easily buy one cheaper at a later time.
Time will tell but I think Nissan got it right this time around.
