Installed the LX 40 on my windshield. This is supposed to be the closest thing Solar Gard Santolan has to V-Kool. I feel the 2 are comparable with regards to heat blocking, but the V-Kool tint is still superior when it comes to glare. I can stare at the 3PM sun for a few seconds with my old V-Kool M30 tint. Can't do it without squinting hard on the LX 40. Night visibility for the LX 40 is great, as expected.