G35/G37 are faster than the M3, I know I owned a G35.
Anyway there are a few out there with built motors running twin turbos or have LS2 motor swap with turbo, so don't sleep on all of them. I respect all performance cars because it might be that built civic that hands you your ass in front of your girlfriend/wifey.
just saying. Owning a modded G35 I still respect the vehicle for the class it's ment for, I sure there are a few M3 owners that have tried and tangled with GTR, 911TT, Z06, etc,etc.