Comment by zamadatix

For TVs under ~80" I feel like you'd have to be sitting abnormally close to your TV for it to matter much. At the same time I think the cost difference between producing 1080p and 4k panels is so low it probably doesn't matter. Like you say, things like the backlight technology (or lack thereof) make a much bigger difference in perceived quality but that's also where the actual cost comes in.