+100 on the SF Challenge (although I hate black wheels on any car but that is just a personal thing). I'd go for gold on a black car and mercury silver on anything else.I have a 06 magnetic black Z, and I have been looking at rims for 6 month now and I'm having a hard time deciding. I keep going back to the SF Challenge, recently I found them in diamond black. I think thats the one I'm going to get. I'd like to here your opinions? I voted for the SF Winning in your poll.