The S517 series by TCL was released in 2018 the same year when UK630 by LG was released. Both series are full HD Smart TVs created to compete with each other. TCL 43S517 vs LG 43UK6300PUE will cost you $100 cheaper brand new although it does not have perks like voice remote or local dimming.
Both units come with 43-inch Ultra HD screens with 3840 x 2160 pixels. The recognizable video file formats are H.264, H.26, MPEG-4 DivX. LG has way more options like QuickTime, VC-1, VP9, Flash Video, and H.265. TCL comes with a VA display while LG has got IPS. HDR 10 plus 1.07 billion colors are also common for both.
Both of the Smart TVs come with remote and parental control. LG 43UK6300PUE vs TCL 43S517 has other features like local dimming, Bluetooth audio streaming, and Voice remote. By the way, LG is Alexa and Google Assistant compatible just TCL. Neither has a 3D feature.
The shared streaming services are Netflix, Hulu, Amazon Video and Vudu. But TCL has HBO, unlike LG. So many interesting peculiarities to note. Both TVs have connectivity options like Wi-Fi, Wi-Fi 5GHz, analog and optical audio inputs, HDMI and USB. The TVs come with stereo speakers, 16W for TCL versus 20W for LG.
Both units come with a VESA mount and a removable tabletop stand. If you compare the size and weight they are also pretty similar, both weight about 18 pounds and measure 38x22 inches.
The designs are also pretty similar, matte black plastic panels. But TCL looks cooler with much thinner panels framing the screen.
The LG 43UK6300PUE is better TV in this comparison. Check LG 43UK6300PUE price