The Infiniti looks a lot classier to me. The hood of the 350z is too long. Although it does remind me of a Dodge Viper. Still not as good looking as the G35 though.
Most Def the Nissan because I like the interior of those cars better than the Infinity. (I am not a huge fan of the analog clock Infinity feels classes up the inside of their vehicles)
Infiniti for sure. Yeah, the Nissan still looks cool, but the Infiniti definately has more class and is a lot nicer. The metal door handles and the boxier look of the Nissan doesnt look as good IMO.
i love the G35X. if you got a big budget for sure go with the G37. oh and the rims on that Q45 look ridiculous. i cant stand those "look at me" rims. not very classy
g35 for sure, the only people i've seen driving 350z's are rich house-wifes, gay guys, or douchebags who think putting rims and a body kit on 350z's make them look tight, which they don't.