Thanks for your reply. As I understand it the limitation is on the OLED pixels themselves, therey're so tiny that the amount of light they can emit is limited, isn't it the reason? I don'y know why but there's something about OLEDs that I don't quite like it. I've seen OLEds at shops show rooms but also at a friend's house playing 4K HDR video from a Sony UBP X-800 UHD BD player (the same that I own) and I liked its contrast, who else doesn? But I don't know, maybe it's how it displays color, the amount of light or maybe it's just that I'm used to my Samsung QLED and one's eyes take some time to get used to a new display technology (I didn't miss old CRT's at all, and I didn't changed from SD CRT to HD LCD, my last CRT set was an HD one and I had a second generation Sony BD player player back in 2007).