I prepared an informative LG 86SJ9570 review after testing it. This model belongs to the SJ9570 series, which also includes other high-performance models. LG 86SJ9570 was released in 2017 and it is in the high price range since it costs over $4000.
If we talk about LG 86SJ9570 specs — this model features the IPS display that supports 4K at 120Hz providing you with the blur-free image output. The LG Super UHD TV technology guarantees vivid colors supporting the HLG HDR standard. The IPS technology helps to assure clear image no matter where you look at the screen from. WebOS Smart TV allows you to use various video streaming applications using the Wi-Fi module. It also supports Sling TV. This model supports wireless connection with various soundbars (recommended soundbars are SJ7, SJ8, and SJ9).
If you look for a huge TV with many features then LG 86SJ9570, but you should find a proper place for it, since it has a reflecting screen.