I just went back to the Apple Store after returning my 5th user. All of them had screen issues. One swore I was slightly yellow. One swore I was slightly pink. One claimed there was a micrometer-wide dust mote in the lower left corner under the glass, next to the bezel. One suggested I had uneven lighting. This last one kept trying to turn my brightness all the way up while locking himself in the closet and viewing a completely black image. There is definitely a quality issue with these new Apple users. I think the manufacturer may need to revisit the QA process.