Don't plan on that helping. Almost ALL have lines it's just to what degree. Most that report "no lines" simply don't understand or see them, but most of the time they are there even when the untrained eye doesn't see them.
I see the lines instantly on over 90% of rev C MBAs. I can see them from several feet when walking up to an MBA in an Apple store.
These lines are sometimes terrible but mostly moderate. Slightly affected displays are what we are looking for. On those, the lines can only be seen from four to six inches from the display. That doesn't affect "normal" viewing.
I have researched and tested this fully. I believe there will be a firmware fix.
I agree with most of this. They can be seen instantly once you know what you are looking for. Even where the lines are moderate, the screen is far duller and dimmer than other Apple displays. I don't think this can be fixed via a firmware update, but I hope I'm wrong. I think the displays are simply bad. It makes no sense that almost every Macbook Air REV A was great.