Samsung 50au7172. You will never miss a thing with 4K upscaling, and HDR powered by HDR10+ which allows the picture to adapt to the brightness of your room. There is Adaptive Sound too, and Q-Symphony Lite with selected Samsung soundbars (sold separately) which allows the TV and soundbar to work in harmony for a truly immersive experience. This Smart TV is powered by Tizen so you can discover a huge collection of 4K films, TV shows, and all your catch-up TV apps. Motion Xcelerator provides smooth motion for gaming, helping you stay one step ahead of the competition. Samsung TV Plus provides instant access to loads of extra free TV channels, straight out of the box (as long as you have an internet connection). There are movies, entertainment, sports, news and children's channels.