Legalities aside, I would go for 20%. I did 35% on my 2012 Impala and wish I would have went darker. In PA, ANY tint is illegal, so I'm just as illegal with 35% as I would be with 5%. 
Like @WickedGoat mentioned above, make sure you use a reputable shop that has been around for a while. A lot of these tint shops are here one day and gone the next, so their "lifetime warranty" is useless. Now, if you get a more expensive tint, they usually offer nationwide lifetime warranties, so even if the shop you used closes it's doors and you have issues with the tint 5 years later, any other authorized dealer of the tint will honor the warranty.
I used 3M tint - 3M ColorStable 35%. It definitely costs more up front than the cheaper tints, but it has great scratch resistance and will not fade. It also has the nationwide lifetime warranty.
I know that there are some other more expensive tints that are "self healing", which is kind of cool. So even if you did scratch it, it would "heal" itself! Can't remember the brand offhand though.
My point is that I would spend more up front and get a quality tint with a nationwide lifetime warranty. So many people just use the cheapest place they can find. If you plan on keeping the car long-term, the difference between $200 and $500 is meaningless over the life of the car. And it's nice knowing that you'll *never* have to pay another dime for tint.
Just my two cents!
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Like @WickedGoat mentioned above, make sure you use a reputable shop that has been around for a while. A lot of these tint shops are here one day and gone the next, so their "lifetime warranty" is useless. Now, if you get a more expensive tint, they usually offer nationwide lifetime warranties, so even if the shop you used closes it's doors and you have issues with the tint 5 years later, any other authorized dealer of the tint will honor the warranty.
I used 3M tint - 3M ColorStable 35%. It definitely costs more up front than the cheaper tints, but it has great scratch resistance and will not fade. It also has the nationwide lifetime warranty.
I know that there are some other more expensive tints that are "self healing", which is kind of cool. So even if you did scratch it, it would "heal" itself! Can't remember the brand offhand though.
My point is that I would spend more up front and get a quality tint with a nationwide lifetime warranty. So many people just use the cheapest place they can find. If you plan on keeping the car long-term, the difference between $200 and $500 is meaningless over the life of the car. And it's nice knowing that you'll *never* have to pay another dime for tint.
Just my two cents!
Sent from my HP SlateBook 10 x2 PC using Tapatalk
