I have an LG display and it is flawless. I have been using it since mid july, so over 3 months now. The screen is immaculate and the picture is amazing. Besides for school work, i use LR4 and play cs:go. With both of these, the image stays on the screen for quite sometime and i have had no problems. I hope that helps.
Umm you basically said your screen is extremely bad or you have no idea what IR even is.