twin turbo bicycle

naahh..

Really, it all depend on your needs, budgets, commodities, space, etc...
It is obvious that, in a 370z forum, we, most of the time, are going to incline in favor of the Z.

You have to know that this is a 2 seater car, not to much cargo space in comparison with the bmw or, maybe, the mazda miata (dont know about the last one).
The Z is not the best economy gas magic saver nor is the worst, but again, in comparison with your options, the Z is not the best in your options.
Z could be your daily car, but again, depending on your needs, could or could not satisfy your expectations.

Anyway, based on what you are saying, get a economy sport sedan.