I couldn't never get a true white on the acer. The difference is actually quite noticeable between the two monitors when it comes to contrast ratio, brightness, and whites. I had bought the 2 year protection plan that covers dead pixels, and they were able to transfer that to the asus as well. The asus had actually gone up in price since I first bought it, but luckily microcenter honored what I had originally paid for it so I didn't have to pay any extra. I ended up returning it and getting the asus again. Tweaking doesn't do anything because it's warmer on the left side and cooler on the right, so no amount of tweaking will really fix it. Turns out it's a screen uniformity issue, and it's just something that these monitors have and not really a defect. The acer had this weird slight yellow tint that was noticeable on white screens (like websites). It's too bad that their monitors aren't as reliable. It's disappointing because I have an asus rog motherboard and GPU that I have had zero problems with. The acer has similar issues because the panel is made by the same company but the QC issues aren't as bad. However, the microcenter only had 1 other PG279Q in stock, and I just did not want to deal with the hassle of taking it back and forth because I have read a lot of reviews of people going through several panels, and some of them in the end go through 4-5 and just give up and buy something else.

But overall, very similar in terms of image quality. But the xb271hu has similar quality, I just notice that the out-of-the box color just needs slight tweaking, and the contrast ratio is slightly lower. I can testify it is better and gave me less problems than any other Dell or Acer I've ever had. You will be satisfied by the monitor, especially if you are a gamer. It is unfortunate that you got that dead pixel, and you should have it replaced. The PG279Q is probably the best non-curved gaming monitor available, period.

Microcenter pg279q