PPFInstaller

I'm based out of Florida.  Stek has been on my truck for about 10 months now.  I have each panel covered in something different, all installed at the same time.  Stek did great for the first couple months with the hydrophobic layer, but by now everything is sticking to it.  As for the pricing, I was buying directly from them in Korea (almost half the price of Suntek).   I'm pretty sure you can do the same but they will sell you white box film.  

Suntek all the way.  I don't know who is charging more for Stek because it definitely is cheaper.  The hydrophobic coat on the Stek only lasts a few months, at least in my weather.  Installers who decide to stick with Stek will have rough years down the road when removals will be needed.