everyone's gotta have a favourite. i think the 370z is a great car for the money for some people, just like a mustang 5.0 was great for my father. however, there's no way in hell i could see the 370z as superior, considering the 1m is now in m3 and cayman s/r striking distance.
to me, that's enough, as the 1m is a bit of a compromise of a car- one that you can drive all year long in all weather and have a huge grin on your face all the time. if i wanted to spend my money on a car that i could only enjoy during the extremely limited summer, i'd go for the cayman s, though. too bad i can't afford both.