As the years go by, big-screen TVs are getting larger and larger, as the price curve continues to drop. Even so, a massive TV is a major purchase, and you don't want to commit to purchasing a TV that you'll regret.

On that note, Techradar has a good piece of advice: "If you see a 75-inch 4K TV for around $600, it's probably going to let you down in terms of picture performance."

Another thing is worth remembering: Unless they're somehow defective, even lower-end TVs are still pretty good, will still give you most of what you need from a television, and are a remarkable improvement from what was available ten or even five years ago.

The product rating website RTINGS.com, in the spring of 2020, published rankings of the best TVs in the 70-75-77-inch range. The site gave the top spot to LG's OLED77C9PUA, calling it "a superb TV with outstanding picture quality and tons of features to satisfy even the most demanding enthusiasts," 4k.com and Tom's Guide also named the same model its top 4K HDR TV of 2020, while Techradar listed it second.

However, due to a quirk in LG's screen sizes, the 77-inch C9 does not come in an exactly 75-inch size, nor do the next two items, so technically the top choice for a 75-inch  model is Samsung's Q90/Q90R QLED.

RTINGS also published a table with its complete ranking of TVs in the category, from 2018 and later. The ranking gave each model a "mixed usage" score, out of 10, and even the lowest-ranking TVs had a score of higher than 7. The models all come in multiple sizes, 75 inches included.

The lowest score was the 7.1, for the LG UM6900, from 2019, which the site called "a decent entry-level 4k TV with an IPS panel. Like most IPS TVs, it has a wide viewing angle, but doesn't look as good in a dark room, as it has a low contrast ratio, poor black uniformity, and no local dimming." The site added that it "can't get very bright."

The site's rating for the second-worst was the Sony X800G, also from 2019, with a 7.3. The site noted that the TV "doesn't look as good in a dark room, as blacks look gray in a dark viewing environment. It also has higher than average input lag."

Third from the bottom was TCL's 4 Series, one of its Roku Smart TVs, with a 7.4 score. While calling it "a decent TV overall," RTINGS  noted that the TCL model "can't get very bright" and is also weak in terms of color gamut and gaming performance.

Fourth and fifth from the bottom in the site's rankings were a pair of 2018 items from Samsung, the NU7100 and NU6900. Both received 7.4 mixed-usage scores.

All of those brands - LG, Sony, TCL and Samsung-had other models that ranked higher on the RTINGS list.

All 43 TVs ranked are in 4K resolution, and all have LED screens, while the top three-LG's C9 and C8 and Sony's A96 OLED-feature OLED screens.

Stephen Silver, a technology writer for The National Interest, is a journalist, essayist and film critic, who is also a contributor to Philly Voice, Philadelphia Weekly, the Jewish Telegraphic Agency, Living Life Fearless, Backstage magazine, Broad Street Review and Splice Today. The co-founder of the Philadelphia Film Critics Circle, Stephen lives in suburban Philadelphia with his wife and two sons.