I'll have to agree with 370zsteve on that one. I dont understand what really constitutes as a 'mid life crisis' and whether it really exists! it's an urban myth in my book! What's wrong in someone wanting to drive a sports car when they're not in Teens, 20s,or even 30s? Maybe circumstances prohibited them to owning one. Maybe they simply love sports cars in general.. I'm 25. So no, my defence is not from experienced knowledge but I can say it isn't biased.
ANYWAYS to OP.
like everyone else said. If you have things to carry, get G, if not Z.
Both are amazing cars and I contemplated the exact same. (But up here in Canada, we do not have "Base" Z.)
Styling on Z is definitely much nicer than G IMO stock v stock but i think modified G looks as nice