TCL QM5K 75" QD-Mini LED TV vs TCL S5 75" 4K Google TV (75S551G)

The QM5K is the better TV. Its QD-Mini LED backlight with up to 500 local dimming zones gives real black levels and high HDR brightness, which the edge-lit S5 cannot match. The S5 is a solid budget 75-inch with Google TV, Dolby Vision and a metal bezel-less frame, but its picture is flatter in dark scenes and bright rooms. Buy the QM5K for movies, sports and gaming in a bright room; buy the S5 only if you want the lowest-cost big screen and mostly watch well-lit content.

• Choose the TCL QM5K if you want deep blacks, bright HDR highlights and 144Hz gaming from a 75-inch Mini LED set.
• Choose the TCL S5 if you want a large 75-inch 4K Google TV at the entry level and mostly watch bright, everyday content.