Before moving to TX I never had tint, there was no real need for that. 3 weeks after moving to TX, I got tint all around on both cars, my left arm was getting sunburns
Both cars in sig have ceramic all around, including windshields, and yes you can feel the difference. Volt is the darkest you can legally get here, Mitsu has 1 shade lighter for the front side windows. I found it is too dark in Volt during nighttime and especially when it rains ( I have to crack open window to see sometimes in those conditions).