There is no LED around 4K or not than can compare with a plasma TV. That TV is going cheap. People are prepared to pay a premium for plasma TVs on the used market for good reason. Panasonic TVs are reliable Samsungs are not.
I have noted you have a perverse tendency to be attracted to absolute junk. If this TV is working it is not junk. May be that will cause you to generate an antipathy to it!