I drove one a while back aswell.. Nissan dealer kept emailing me ab out having some.. so i went and took a test drive..i drove the track model..
I liked it.. but just not enough HP.. and i felt the Cobra handled corners alot better.. and obviously has alot more power... love the 350z looks though.. and the stance.. interior was nice aswell.. but it'd need another 100 HP for me to like it over the Cobra (and then it'd be the 350 hands down).
Right now given $40K i'd take a Cobra no problems.
but your more into "Pimp' than i am.. and you'll have a fast race car.. so i think the 350z will suit your pimpness well