Model numbers vary by country, so it won't help to mention it, also the model may change in the coming quarter.
The cost of the electronics is fairly small over the cost of the LCD panel, particularly if you decide on UHD resolution, flat not curved, LED array lit not side lit LED, localized dimming, are the way to go today, and is the most costly panel. Even up to 80" is a great resolution because the pitch is so fine. What size you get and other tradeoffs, e.g. side lit, is question of what you can afford. At UHD LED backlit panels all the prior LCD issues like contrast ratios and viewing angle, ghosting, refresh rates etc., are all non-issues, UHD panels and its drivers are "Plasma" like. At UHD, all the makes technology become moot, it became a question of manufacturing at low cost and few dead pixels.
Most "monitors only" are < = 27". Some large monitors do exist in commercial grade, but they tend to have more dead pixels and you pay extra for the uneeded industrial frame and hardened glass. UHDTV at 50"+ is the same dot pitch as monitor grade, about 0.11mm.
Only 3 makers left of > 50"+ LCD panels: Samsung, Sharp and LG. UHD technology has pretty much settled, so they all look fairly good, but IMHO the image produced by Samsung >= Sharp >> LG, and given Sharp's likely exit of the consumer market, Samsung as a brand is a one to get. Samsung supplies all Sony's panels, and even Sharp supplies panels for Samsung. But if you buy a Sharp HDTV set you could be orphaned, as if production ceases through an entire line, even if warranted, there may be no parts or new product to be honor a warranty with.