Kind of remarkable, given the underlined.Update: Without knowing which panel was which, I randomly laid all of them outside in the same position and tried to pick the one with the greatest color depth and brightness. This was a completely subjective judgment and was pretty difficult to do, as they all seemed pretty similar and one was not clearly superior. It was a blinded test -- I didn't know which product was which as I viewed them (the labels are on the back of each panel and not visible). After scrutinizing them, I chose one that seemed to have greater depth and clarity to reflections. It was the Glare Professional Polish.