Interesting. I pretty much agree with whats said, however, as others have said the R35 GTR is not really even comparable to the Z as it's miles in front in all areas....especially price.
I think the 370z is the first car to come along in a long time that is actually fun to drive.
If you want huge HP and 10 sec quarters, then get an older GTR and modify it. 10sec quarters are not very hard at all. The RB26DETT is one of the best base motors to tune...ever.
My mate Dave's old GTR - 608kW at the wheels
YouTube - Fangartists - Leewah's R33 GTR
BUT
If you want a new, fun, daily driver get a Z.