In florida you can apply for a state sunscreening exemption! You get a Dr. to sign the application and submit it to the state with around $5 to $10 and your allowed to have your windows tinted as dark as you want!! My windows are 5% and my windshield is 35% with a 5% strip!
I've had mine exemption going on 4 years and I get stopped all the time for my tint but I have never got a window tint ticket....instead they break my balls and give me a $72 unsafe equipment ticket for my tinted taillights!
I would google search your states statutes....ie. "Your State" sunscreening exemption, before I would go pulling my tint off and replacing it with something I will not be happy with!
Here is the link for my fellow Floridians......
http://www.lupus.org/webmodules/web...cation for Sunscreening Medical Exemption.pdf
Here is the Florida Statute:
Chapter 316 STATE UNIFORM TRAFFIC CONTROL
316.29545 Window sunscreening exclusions; medical exemption; certain law enforcement vehicles exempt.--
(1) The department shall issue medical exemption certificates to persons who are afflicted with Lupus or similar medical conditions which require a limited exposure to light, which certificates shall entitle the person to whom the certificate is issued to have sunscreening material on the windshield, side windows, and windows behind the driver which is in violation of the requirements of ss. 316.2951-316.2957. The department shall provide, by rule, for the form of the medical certificate authorized by this section. At a minimum, the medical exemption certificate shall include a vehicle description with the make, model, year, vehicle identification number, medical exemption decal number issued for the vehicle, and the name of the person or persons who are the registered owners of the vehicle. A medical exemption certificate shall be nontransferable and shall become null and void upon the sale or transfer of the vehicle identified on the certificate.
(2) The department shall exempt all law enforcement vehicles used in undercover or canine operations from the window sunscreening requirements of ss. 316.2951-316.2957.
(3) The department may charge a fee in an amount sufficient to defray the expenses of issuing a medical exemption certificate as described in subsection (1).