Sad to say, this TV is going back. A word to all, ignore anyone who claims either IR or burn in are no longer a problem. These are people either with vision issues, sitting too far away to notice discernible detail or just flat out lying.
We've had the GT50 since the week after Black Friday. With settings reduced (brightness contrast), we watched a variety of content and ran the slides while sleeping or not using the TV (not while away). In all, I would guess we've had the slides running 225+ hours. Mind you, this doesn't include normal viewing.
Last night, we had an emergency with one of our dogs and had to rush out of the home for about 20 minutes. I left a copy of Dead Nation running on the PS3, when I came home I saw what I assumed to be IR. Immediately, I ran the slides for the rest of the evening and all night. This morning, the image is still clearly visible on almost all slide colors.
At this point, I still notice it even during a Bluray, I am inclined to call this burn-in. Seeing as how I have a 90 day return with BB, it's going back. I am not going to curb my viewing experience for marginally better blacks and absolutely no other perks.
PQ was great, as it is on virtually all high end TV's...