The main difference between a monitor and a TV is the TV comes with a picture processor (upscaling, noise reduction, motion interpolation, image blur reduction, deeper blacks, etc). I have switched from a low-priced Samsung TV to a mid-range Sony TV and these help a lot. Are dumb TV able to do that as well? If I look at the datasheet of the Sceptre U550CV-UMC, they say they do noise reduction, but not much else. Also, reviews are basically non-existant.
Sony takes LG OLED panels and rebrands them with their own signal processing. It REALLY makes a difference if you are into 22fps or 4-4-2 pulldown with movies. Every once in a while Costco has the Sony OLEDs at the same price with the LG's (normally the Sony's are more) - that's the time to buy! Same OLED panel, but Sony's video processing is better so if you catch them when they are price the same pick the Sony!
