Hey wats up. I live in NY. Make sure you think before you tint so that later you will not have to retint your car. When I did my car I think I rushed and now I kind of regret. The best tint to get is 20%. From what I know it doesnt really matter what you have on your back door windows so my back doors are limo. Well to begin I want to mention that it all depends on the color of your car and your inside. If you have a car like I do (beige outside, beige inside) you definitely need DARK tints. If you have a black or any other dark car with dark interior your tints dont have to be very very dark. Like for example if you look through the window and your seats are black than you wont be able to see much. On the other hand if youl look through the tinted window and you interior is light color youll be able to see everyting. Well anyway my back doors are limo 5% and my back window is 20%. Theres way too much light coming in through it and so I regret that I made it 20%. When one time I wanted to retint it the, tint guy told me that sometimes when you take off the tint on the back window you can damage your defrosters so I just left it like the way it is. Another thing there is such thing is dark 20 light 20 and I guess they have a medium one so keep that in mind. I hope my post was helpfull.