lol at the loves and hate.

A. Those are not Racecars, lol.
B. Blue G37 with Volks R30 - Those are damn light and have been used numerous times on the track with the TE37s and CE28s.
B. GT-R with Gold Volk RE-30 - Though it's a baller wheels, but are equal or better, lighter than OEM. Baller status + no sacrifice in performance = WIN WIN in my book.
C. Green Z - Made a show car, stay a show car. Custom wide body = Custom wide wheels. Nevertheless, the power on that car can break loose the heavy wheels easily.

They all have different tastes, so like Chad said, whatever floats your boat.