What is the best 4K TV? Our expert pick is the Samsung QN90B for its picture quality, variable refresh rate support, object tracking sound, and built-in voice controls via Alexa or Samsung’s Bixby. It’s easier and more affordable than ever to get your hands on a 4K TV We researched and compared big brands like Samsung, Sony, and LG, as well as more affordable options from TCL if you need to stick to a budget.