I bought a 4280 Kuro a little more than a month ago. Best picture ever IMO. I have a PS2,PS3, and a 360 hooked up to it. I work 3rd shift and on the weekends I game all night. This last weekend I was playing Socom for more than 8hrs straight, I have not seen any sign of even IR as of yet except for one circumstance. I left a pause screen up for 45min one day that had a box with a bright white border about 1/8th of an inch thick. I had the Orbitor on(which I never turn off) and the oly thing it did was leave a inch thick box that you could see in a black screen( the orbitor moved the thin white border around and created a thicker border). The only thing I could really see was that it wasnt as black as the rest of the screen, sort of grey, and you had to look for it. The white border was exremely bright. This disapeared within minutes of watching regular programming. Under normal 8hr game sessions nothing has shown up yet. Now if that doesnt prove Im a dork and you dont have to worry about IR on a pioneer....well nothing else can. Good day.