My previous BMW was jet black. It was beautiful when washed but it was a bitch to maintain and it was impossible to keep it swirl free. Maintaing the look of the car was like a part time job. I love the space gray, it has a nice shine and it is super easy to maintain.
Space Gray 2011 335xi E92
Old: Jet Black 2007 E90 (with xenons
and modded) 328i