If you go with Air80 or Strato70 on the windshield you wont be able to tell it is tinted, but because they are ceramic tints you will get the heat rejection. I noted that with those tints I can tell when another car has a tinted windshield looking out my windshield.
My wife has air80. I did strato70 on my last car. On my Model Y I went with 50% (windshield). You can barely tell from the outside that it is tinted. I can't tell from the inside. I wish I had 40% on the windshield. I did 20% on the back half of my model Y, but I am ok with blacking out the back half. The two front windows have 20%.
I like my window tint on all my cars. I don't drive much at night, but I don't notice the 50% on the windshield.
Your location should have a lot to do with your tint. I live in Georgia. It gets hot here. I spend some time in Cocoa Beach, Fl. If I lived there. I may want 5% all around and 35% on the windshield. I imagine AZ would be the same way.
