Dan, I think you're over reacting a bit, mate, no need to throw the toys out the pram
I think what people in here are saying is that of course you can have an opinion about the drivability, handling and overall performance of the 370z if you have actually owned / driven /experienced one for a while. You can for instance debate the aesthetics of the 370z without having owned one, just by looking at photos
I also think you're preaching to the converted, if I may use that phrase, without offending anyone. Most of the guys expressing their opinion on this thread have / had 370z and of course they get offended when you slate their cars just for the sake of having an opinion here I kind of did the same thing with the 370z Nismo MK1 aesthetics, but at least I had a 370z for a good while, so I sort of got away with it.
To the original poster, ask a member in here to take you out in one of the properly modded 370z, it will give you a very clear idea if you want one or not: Eg. Rich@H-Dev, Jonnymonno/John, VH1/René, Keyser/Chris to name a few, depending where you live. Much better experience as with the dealership
Good luck!