It makes sense comparing Samsung UN49KS8000 vs LG 49LJ5100 because they both are able to give some premium features. The screen size is the same and is 49 inches. The UN49KS8000 belongs to the series KS8000, and the LG 49LJ5100 - LJ5100. The Samsung UN49KS8000 series has 49, 55, 60, 65 inches diagonals, and 49LJ5100 boasts 49 inches diagonals.
The UN49KS8000 is capable of playing video in 4K/UHD resolution, which can't be said for 49LJ5100. Each of the compared devices supports Full HD resolution. The UN49KS8000 has the AMVA3 display, while 49LJ5100 has the IPS display. The LG 49LJ5100 works with 60Hz refresh rate, for Samsung UN49KS8000 the refresh rate is 120Hz.
Sound in the stereo format is available to each TV. The speaker power of the Samsung UN49KS8000 is 40W, versus 10W of the LG 49LJ5100. Dolby Atmos multi-channel audio format is not supported by both of the tested models.
The width of the UN49KS8000 is 108.97/42.9 cm/in, and for the 49LJ5100 it is 110.74/43.59 cm/inches. The height of Samsung UN49KS8000 is 63.25/24.9 cm/in, LG 49LJ5100 of height 65.8/25.9 cm/inches. A depth UN49KS8000 is 4.32/1.7 cm/in, the 49LJ5100 has 8.1/3.18 cm/in depth.
The UN49KS8000 has 4 HDMI connectors versus 2 connectors in the 49LJ5100. As for USB, the UN49KS8000 has 3 ports, compared with 1 ports for the 49LJ5100. Only the Samsung UN49KS8000 has the ability to connect to the Internet via WI-FI.
VESA sizes differ and amount to 400 x 400 versus 300 x 300 for the LG 49LJ5100.
You can watch Netflix TV shows and movies on only on the UN49KS8000.
As for Smart TV, only Samsung UN49KS8000 has this feature. The UN49KS8000 has Local Dimming technology. Voice control is not available for these models.
The Samsung UN49KS8000 is better TV in this comparison. Check Samsung UN49KS8000 price