Unless you can find this series at a huge discount, one of our picks is the better choice. Like our picks, this TV has a 60 Hz refresh rate, so motion isn’t as fluid as it can be on a 120 Hz panel, and this model doesn’t have the gaming-friendly HDMI 2.1 features that our picks offer. The SDR contrast was more reliable, as the TV produced a brightness of around 350 nits with black levels as low as 0.025 nit. The TV has two HDMI 2.1 inputs, one with eARC and several other.

Onn also claims 500-nit HDR brightness for this TV, but during testing I measured HDR peaks closer to the low 400s, coupled with black levels that were overly bright on occasion. Surprisingly, the R646 has brought new features and therefore new life to my home theater. In our tests, the local-dimming algorithm occasionally got confused, especially with varying shades of gray on the screen (such as when we were searching in the built-in YouTube app), which led to some visible shifting of black levels. For a more in-depth analysis, I’d highly recommend checking out the deep-dive performed by, where TCL 6-Series managed an overall score of 8.3 with particular strengths in HDR. Walmart’s in-house Onn brand released a frameless Roku TV, and although the Onn QLED Roku TV is priced competitively against our top picks, it has some flaws that keep it from going the distance.

Tcl 6 series rtings