I’ll go with the Samsung if it can play your files. The Sony though a good TV has a weak contrast ratio therefore blacks are not as good. When you go HDR the tendency of a brighter panel is to expose more of the weakness of the tech...esp in a dark room environment. But in a brightly lit room wala naman problema.
Best pa din is go see the units in person and feel out what is best for you.
Ako,I like a darker picture that’s why OLED is good for me. But my brother? He went for the Sony 900 series (Best in a brightly lit living room) kanya kanya talaga.