I see a lot of the newer TV's are advertised as 4K, and the demo playing in the store (in 4K) is really impressive. But will the TV I watch through my cable box be of this high quality, even with a so-called 4K box from the cable company? What about Blue Ray DVD's? My current flat screen Samsung is pretty nice, but honestly, what I was looking at in the store on the 4K TV was mind blowing in its color and detail. I just wonder if watching movies on Netflix, or On Demand TV programs, or TV shows recorded on the DVR will really look what I saw in the store, or look more like what I already have.