I can recommend Auto Mall Tint Specialist in Fremont for the outstanding job they did installing Huper Optik on my Accord a few years back. All of the tint shops near me carried various metallic products and I was looking for ceramic to avoid problems with my Nav and radar detector. I originally had an appointment with a shop in Sac, but they stood me up... so I called AMTS. They not only opened on a Saturday to help me, though they only advertised M-F hours, but they quoted me at $450, which was $50 less than the other shop. When I got there, we discussed the different varying levels of darkness and how a 45 film might be better than a 35 on the curved rear glass (if memory serves, they have to melt the film to fit, which can create ghosting and distortion on darker/thicker films). I eventually decided on a 65/55/45 front to back, which was perfect. I was very pleased with their customer service and quality of work. I sold the car 4 years later, having had no tint-related problems (ie. bubbling, peeling, scratches, etc). Good luck!
'13 EBII 335i M-Sport (on the way)