I have 3M Ceramic IR on the whole truck (including sunroof and windshield), 5% on all the windows, 70% on the windshield and 50% on sunroof. It helps with the heat once you're going with the AC.. but when you first get in it's an oven for the first 3-5 minutes until all the heat is released. It sits in the Miami, Florida sun all day. I paid 650$ to have it done locally with a 3M certified dealer and wouldn't go with anything else. Lifetime warranty and 3M name brand.. get the upgrade, if you can't right now, just wait, it's worth it.