TCL has unveiled its 6-series lineup of 4K TVs with some impressive tech at relatively low prices. To start with, the sets all use TCL’s QLED Mini-LED tech with up to 240 local dimming zones. That delivers higher brightness than OLED, but with better contrast control than regular QLED TVs. Together with Dolby Vision (along with HDR10 and HLG), that means you’ll see movies with extra pop and color