Is it worth it?
If you want a 55-inch OLED for dark-room films, live football and console gaming, the Samsung S84F lands in a very attractive lane because it combines 4K OLED contrast with a 120Hz panel and Samsung’s AI upscaling. That makes it relevant for buyers who want a premium living-room screen without jumping to the very top of Samsung’s range. The trade-off is that this is still a set where room lighting, sound setup and source quality matter, so it suits a buyer who values picture depth and motion more than a do-everything bargain screen.
I’d put this in the buy list for anyone who wants a sharp, cinematic OLED that can also handle fast sports and gaming in the same room. It is less convincing if you mainly want a simple TV for casual daytime viewing, because the appeal here is the panel quality, anti-reflection handling and 120Hz motion rather than basic cheap-and-cheerful ownership. The clearest fit rule is simple enough: choose it for premium picture quality and smooth motion, skip it if you want the lowest-friction smart TV experience with no premium-panel priorities.