1) Is there anybody in here who replaced his/her "plain" screen with a AR screen, and actually saw real improvements in the readability? I would assume so...
I've reinstalled my green non-AR screen after driving with a blue AR screen for about 3 months. I do personally think the non-AR screen is better readable when the sun shines in directly. This is due to the fact that the AR screen diffuses the light making the entire display unreadable. A non-AR screen works like a mirror, so only a small section of display is unreadable. An AR screen also makes the display more fuzzy...
These observations are probably specific to my car; it is impossible to have the sun shine on the display and reflect the light direct into my eyes, because the empeg is mounted very low in the dash...

Frank van Gestel