I totally agree on the iMac display, and the aluminium MacBooks, but the A1181 displays are alright.
Yes, no IPS inside, no LED-backlight, but back in the days, when they were new, they would stand out from all those HP and ACER machines and they still look fine today. For a 999$ price point, there is nothing to complain about in retrospective. I have owned like 13 or 14 of them and I have never seen crazy yellowing, red frames or serious lighting issues. I know, there are always a few bad apples in the basket, and displays degrade over time and use, but in general they are good quality.
I think the 23" ACDs were way worse. I've owned 3 so far, and every panel had this red frame.