It's not just glare that's reduced on pdi glass. It's the absence of nearly any reflection to the glass. It is startling in its effectiveness. I'm wondering how many in the glass doesn't matter camp are judging it off of seeing invisiglass and have not seen PDI glass first hand? The reason being is there is an appreciable difference between PDI and invisiglass. That said, I perfer not to choose so my option is both.