So which color wheels look best in your opinion?

I kind of lean towards the black, with some interest in the grey.
Early on I was leaning towards the old school torq thrust D's, but I don't care for all that aluminum around the outside of the rim and you can't get them in an 18x8.

I think the black can look good, but I personally think it looks better when it's part of a whole "theme". If there was more satin black on the car, it would work better. You can also offset it some by using chrome caps and lugs.