The Samsung S90F sits in the middle of Samsung’s 2025 OLED lineup — above the S85F, below the flagship S95F — and that positioning matters. Mid-range in an OLED context still means self-emissive pixels, per-pixel light control, and contrast ratios no LCD backlight can approach. The question is what you give up relative to the top of the line, and whether the trade-off makes sense at the price. After extended use, the answer is mostly yes.