TVs are the classic spectacle of CES, and this year Samsung, LG, Sony, and dozens of other companies have returned to Vegas with their latest and greatest 4K HDR models. Sony has made a major shift to OLED for its flagship set, and LG introduced a new 4K TV that’s impossibly thin. Amazon is building its Fire TV OS directly into inexpensive TV sets — just like Roku. And Chinese manufacturer Hisense has brought a massive 100-inch TV to the show. CES has TVs everywhere you turn, and these are the best of what’s here in 2017.