I have a 10 year old Olevia 42" (they've been out of business 7-8 yrs). Use it 4-5-6 hours a day, (I'm retired with lots of free time!) Starting to get wide bands slightly darker than the rest of screen. I have a hardware media player with which I have a 'slide show' of the basic black, white, red, etc etc colors for adjusting various 'picture' settings. This is where I can actually see the bands, tv/movies, I cannot distinguish. Havent found one that I like the image quality as much as mine. Sound died years ago, so its just a monitor, (use AV rec), CC stopped long ago, but cable box has its own CC settings, & subtitles on movies,
-c-