Getting my car tinted Friday and have the option between Suntek "Hybrid" film and 3M carbon based color stable film. It's $150 more for the 3M. The shop says the 3M won't cause any interference and tends to have a blacker tint to it but they've never had anyone not satisfied with the Suntek. Does anyone have any experience on this subject and care to share some advice? 99% sure I'm going 35%.