So to make a long story short, a crater of a rock hit my windshield today and shattered it to hell and back. Shards of glass were literally stuck in my wiper blades. My insurance deductible is $500 so no use going through them. Safelite wants almost $400 because it is obviously the acoustic windshield that helps block road and engine noise. I think they started this in 2007. I must admit, the cabin is almost as quiet as my BMW when traveling at high speeds. But will I notice a big difference if I go with the non-acoustic windshield? I found one for almost half the price as the acoustic resin version.