I love my g to death. But it's time I try out the z. Too many people have the 37 coupe now lol. Idk I'm skeptical about m3's but **** If i had the money I'd go for it. It's all up to what youre looking for. at the end of the day it's your car and you're gonna be enjoying it. Good luck bruh.
If anything, Just get a GTR
lol