Buying a television by simply looking at specifications is not advisable. There are a lot of factors:
(i)Choosing the screen size and resolution: HD is sufficient for a 40 inch TV as 4K is not of much use on smaller screens.
(ii)Choosing the screen technology: OLED is better than LED but not always a better buy. Either of HDR or HLG or Dolby Vision is enough for an enhanced viewing.
(iii)Choosing the operating system: There are options like Android TV,Tizen OS and WebOS available to make a choice.
(iv)Visiting a store
(v)Going through average reviews online
Finally setting up an approximate budget for experiencing the basic new-age technologies is necessary to bring home a new TV.Read more at: http://www.theage.com.au/