In order to use a 4K tv, you have to have a 1080p set-up.
Since 2008, we've had a 46" Samsung HD tv, that has a Samsung Surround Sound System and a Samsung Blue-Ray DVD/CD Player hooked up to it. A few years ago, a circuit board blew out on our tv, but a small business tv tech fixed it for us. He came out, checked out the tv, took out the board, took to his shop, replaced it and brought it back/installed it for us. The cost was absolutely super. However, we have learned to shut the tv off when there is a t-storm going on. Found out that lightning will affect the performance of a tv.........as it did ours.
So, bottom line is: we will stick with Samsung.