Im in TX, plenty of of what you mentioned. While I do sit higher in an SUV, glare reduction is not improved much at all with what I have. My 80% is almost clear, not dark at all. With all tint, it adds a bit of reflectivity from the outside, which I notice makes it slightly harder to see from the outside looking in, in the form of a glare not darkness. At the end of the day, it's not permanent, it's only money!