like the last time this question was asked on HN, this blog post is really about the amazon affiliate links.
Short answer is "Sceptre 65" Class 4K UHD LED TV HDR U650CV-U" https://www.walmart.com/ip/Sceptre-65-Class-4K-UHD-LED-TV-HD...
However, If you are in the market for a modern TV - be sure to look at the OLED technology - OLED is amazing. This video shows an example of how the OLEDs self-light - and how that tech is great for viewing star-fields