Geez, the E9X M3 model is now over five years old and yet people still comment how beautiful the car is!
Just today I was parking my M3 on the way to Dunkin Donuts when a guy in a E92 335is pulls in next to me and compliments me on my car. He'd seen me at the intersection when I entered the shopping center and just had to pull in after me.
After grabbing a coffee and leaving the shop, I overhear a guy in a Mustang tell his wife/girlfriend how he really liked that M3.
Getting two complements within 15 minutes is pretty good, but comments on a regular basis are not.