The screen issues are not rampant - you are on a help board - people with issues come here.
I have a 2012 Imac 27 inch - I love the screen - no issues here - and every iMac I have seen on display have never shown the tint issue. It is a small amount of screens compared to the number of machines sold.
Tom
For 10 years there I would certainly agree with you Tom. After the replacement of my dud 1999 g3 iMac, I had 10 years of flawless iMacs and displays. 2010 brought issues and I'm noticing display issues on my aging 2010 iMac now (IR, yellowing, black blotches). Things I expect in several years of ownership. Not right out of the gate.
I'm glad you have no issues.
My response is about iMacs and rMBPs I've seen in Apple stores in NYC. Many of them had yellowing issues (I did not know how to look for IR or muras the last time I looked at both.)
Does everyone have this problem? No.
Do folks come on here to complain? Yes.
I complain, but I also make a point to praise when I've gotten a wonderful machine. For 10 years, I had perfect iMacs.
For the price paid, I want to continue to receive wonderful machines. Given the issues I've seen on display models lately, that is what I am skittish about.
I do not have the time or want to spend the $ on possible return roulette. I did it in 2010 until I got this iMac and that was more than enough for me.
After 15 years of iMac ownership, I am not sure what the future will bring to me personally. I look forward to being proven wrong and seeing QC go up with iMacs and rMBPs. They are great machines and that's what I hope to obtain when the time comes.
Sure there are duds in every manufacturing cycle, that's a given. I will watch and wait.