For a few years I have been out of the loop, so to speak, on matters of home theater (among them, lack of a home in which to put said theater). Things are changing, however, and I just have a question or two about current display technology. I am eschewing anything exotic, such as OLED technology. Rather, I am going for a basic LCD screen with 4K resolution. My question is this: Broadly speaking, what is the general accuracy of LCD-based sets? How badly -- if at all -- do they need to be calibrated? Many of the screens I have seen have seemed remarkably good, colorwise, and I do not believe I am being misled by the high resolution (I had already been enjoying 1080p before my Personal Disaster struck). Are there any other issues regarding modern displays of which I should be aware?