Perhaps the most catchy version of LED TV is the ‘quantum dot’. It’s a new way to approach the LCD’s backlight. Rather than using white LEDs, a quantum-dot screen uses blue LEDs and ‘nanocrystals’ of various sizes to convert the light into different colours by altering its wavelength.
OLED or Organic Light Emitting Diodes are considered better, but they are not as bright and they are more expensive. In a nutshell, LED LCD screens use a backlight to illuminate their pixels, while OLED’s pixels actually produce their own light. You might hear OLED’s pixels called ‘emissive’, while LCD tech is ‘transmissive’.
Front projection TV. These are the closest to theater-style imaging and the primary benefit is that they can be custom sized as large as you want. These screens can be sized beginning at around 92 inches and go to sizes of 200 inches or more. You can't do that affordably with any of the other types mentioned previously. Front-projection utilizes many different types of backlight technologies (LED, LCD, DLP, LCOS, DILA etc.) projected onto various types of optically coated screen materials. The disadvantage to a front-projection system is that you should have complete control of any natural light entering the room, otherwise your picture will begin to wash out and lose brightness as well as contrast.
Consider the activities, the room and the lighting conditions before deciding what particular TV display technology you will put in each location. Once you have chosen the TVs, now you have to get a picture to each of them. Buy the right sources! Don't centralize or distribute video! It used to be a great alternative, but with everything being on the internet these days, the cost of centralized video is unnecessary.