First of all, almost all 4K TV's have what they call up scaling. A normal movie will look almost like it was Blue Ray. And a Blue Ray will look almost like it's 4K. Because of this, there may or not be a significant difference. HDR should be more significant. But then again, it depends on how the movie was processed. Some are better than others. But what ever you do, don't worry about the significance factor. Some will be much better and some will not. Just be very pleased that you have the best picture available. And as an extra precaution, make sure that your TV, DVD and receiver are set up for 4K. I had to buy a new receiver because the old one wouldn't pass 4K. Also had to buy a new DVD specifically for 4K. And lastly, I had to take six steps on my new Sony to get it to accept the 4K. And lastly, make sure that you get new high end cables. Because if you go cheap on the cable, you WON'T even know what you are missing. ENJOY!