I priced the Lexus vs. aftermarket glass for my 04 LS430 and began to assume that all aftermarket glass must be inferior, but I decided to research the specs for the glass. A glass engineer from PPG told me that Lexus does not share the specs for its glass with aftermarket providers and that they had to reverse engineer the glass for my car. Glass places including the ones recommended by my Lexus dealer were no help although both of them seemed to think the aftermarket glass was very comparable. However, I have read the forum entries like we probably all have about wavy glass.
Finally, I ran across an old friend who had been running a glass business in Houston who spent a great deal of their focus on windshield replacement and he told me that Pilkington was the manufacturer of Lexus glass and that their aftermarket product for my car was identical. He said it was very common that aftermarket Pilkington glass also had the Lexus stamp etched on it. Based upon his comments, I expressly ordered Pilkington from one of my Lexus dealer recommended installers. They seemed a bit surprised that I knew to order Pilkington (which they also referred to as LOF). They did confirm that Pilkington supplies Lexus and that their aftermarket glass for Lexas often have the Lexas etching on it, but mine did not. My windshield is as clear any of the brand new Lexus windshields I have owned and all for $210 installed.
At the comparable price of the Lexus glass installed here in Dallas TX, I can have 6 more LOFs installed. I figured it was worth the gamble once I had two sources saying the same thing. Now that I see the clarity and the tint match I am sold. I also have the auto sensing wipers and that all works fine.