TCL QM6K 55" QD-Mini LED 4K TV vs TCL S4-Series 55" 4K Roku TV

The QM6K is the better TV by a wide margin: QD-Mini LED with up to 500 dimming zones, a 144Hz panel and Dolby Vision IQ produce a far brighter, more contrasty picture than the S4's basic edge-lit LCD. The S4 wins on simplicity and owner satisfaction, with a 4.5 rating from over 10,000 buyers versus 4.2 from about 1,200, and Roku is easier for casual viewers. Buy the QM6K for movies, sports and gaming in a bright room; buy the S4 for a bedroom, a spare room or a buyer who wants the simplest interface.

• Choose the TCL QM6K if you watch HDR movies or sport in a lit room, or game on a console that benefits from 144Hz and VRR.
• Choose the TCL S4 if you want a straightforward Roku TV for everyday streaming and broadcast, and picture quality beyond 4K resolution is not a priority.