I am looking into tinting my space grey X5 3.0si with privacy glass. I have narrowed it down to Huper Optik, Madico, or Llumar. Huper Optik seems to have a huge premium associated with it and I wanted to see if you guys feel it is really worth it.

I have been quoted $650 for Huper Optik, $550 for Llumar, and $400 for Madico. This is for all windows + panoramic moonroof (not windshield). For some reason widow tint prices are kind of excessive in SF!

What tinting film brands do you guys recommend.