That's a medium size More on reddit.com

Combination of historical US origination and dominance in the field and an apathetic acceptance by the rest of the world. Centimeters should be demanded in each country outside the US, but everyone just rolled over and took the inches. Similar things in medicine, automotive, aviation, electronics, weapons, and bicycles. If US or pre-metric UK got there first, rest assured it's still in imperial/USC. More on reddit.com

Use any of the online guides. This one is a strong reference. Scroll through it until you get the colour graph titled “Optimal Viewing Distance by the size of the television and the resolution”. The human eye has a very specific and consistent ability to resolve a certain level of detail at a certain distance. It doesn’t really vary from person to person. So if you’re too far away from a 4K screen for example, you cannot see the detail of 4K and the best your eyes can do is resolve it at 1080p. Or worse. Typically, there will be people that jump in to argue all this and claim that they can see 4k details on a 48” screen from 15’ away or something silly. No they can’t. It’s been disproven countless times and it’s a tired argument made by people trying to justify their bad purchasing decisions or poor viewing room layout. Ignore those people. The chart on the web page tells you how close you need to be, and the size of the screen, in order to get any benefit from 4k. You may need to move your couch closer to your tv if you can only fit in a smaller 4k display. If you can’t sit within the range, you’re wasting money buying it. Save up for a larger one or move the seating closer. More on reddit.com

I’d personally go X90L or QM851G . If you’re looking budget the U76N has gotten praise but it is a Hisense. I’ve heard Hisense has terrible QA and their warranty can be a PITA. More on reddit.com