Space Gray is absolutely one of the best colors! BUT... God help you if you need to get part of the car painted. My 2007 Space Gray 328i Coupe was dinged in a parking lot by a shopping car, so off to the local BMW dealer's body shop it went. After 3 tries... and them ultimately painting the entire driver's side of the car and part of the roof, not a 100% match and it looked very cloudy at night and on a rainy day.
My new 135i convertible is Jet Black!