most, if not all, Branded window tint films are scratch resistant. I have the Johnsons Window Tint Platinum series. The dakrness also differs with your interior color. If you have a charcoal or black interior, then it will be darker compared to a car with beige interior given they have the same tint percentage. Also, the overall quality of the tint depends on the installer itself. If you can have a Lifetime Warranty from the installer, great.