both great cars but i prefer 07+ G35... well, whatever model that has the newlook with the new interior. the old interior was blah.. i had an 05 G35 so i know. the new ones is much nicer with many new toys.
Nissan/Infini has always made very good awd systems.. just not as known as audi quatro, but again, i think partly cuz Audi advertise it that way to make their auttro seem like the best thing ever.. but if u guys think bout it, they have no choise cuz its either awd or FWD, which is what all of their car are based on.. not impressed.
on the other hand, G35 is very much rwd. even in awd form, they drive like rwd until more power is needed in the front. impressive stuff. GTR is a great example