I replaced my 2 year old Sony HDTV with a Samsung 4K 8550 - 60". My eye sight is not as good as it once was but I can see the difference in picture quality when watching Netflix 4K streaming using FiOS - 58 Mbps connection. (The up scaled picture of Dish, Amazon and other signals seems a little better than regular HD too but not as good as the 4K stream). It will be interesting to see what my daughter thinks about the picture quality when she gets back from HOC location in Jan 2015.