My current laptop is CCFL. It is
most definitely better than LED. My brother has an LED backlit X220, and it's legitimately unusable to me. When installing Windows on it, I had to plug in an external monitor because the built-in one made my eyes feel like they were bleeding.
AMOLED screens are the absolute worst though. I can immediately spot a Samsung phone anywhere in the room. It's like a Halloween strobe light.
My flicker fusion rate is
stupidly high. My father has a 600Hz plasma TV, and while I cannot see it flickering while directly staring at it, any motion, even eye motion, causes the flicker to become clearly visible. Whenever someone watches TV while I'm in the room, I have to turn a light on because of this; otherwise, the entire room seems to be lit by a strobe light. Even when I can't directly see the flicker due to absence of motion, I can still
detect its presence. I have no idea how to explain how this works.
Fluorescent tube lights are also absolutely abominable. I nearly failed out of school
four times because I was having daily migraines due to the lighting. In tenth grade, I finally dropped out entirely because they wanted me to repeat the grade due to nonattendance—caused by a combination of flicker-induced migraines and depression.
Here is a video I recently took demonstrating this effect. The computer on the left is CCFL backlit. The one on the right is the aforementioned Thinkpad X220. Youtube's compression completely destroyed the video quality, but you can still get a sense of what I'm experiencing.
https://www.youtube.com/watch?v=Cpg6D1LQCQg