I am very ocd about these kind of things and most of you would have probably been fine with anyone of these I returned But #9 has no uneven tints, no sever yellow tint, no IR and only very minor backlight bleed. So there are near perfect screens out there. Everyone of the first 8 had very noticeable uneven yellow tints on a portion of the screen. I felt stupid every time I exchanged, but the persistence paid off in the long run. I cannot believe the Apple Store allowed me to exchange that many, but I am very happy that they did.