Pick Samsung QN75Q80TAFXZA if you prioritize a lower price of $2,699.99 and need four HDMI ports without VRR; pick LG OLED77C3PUA if you value the larger 77‑inch OLED screen, infinite contrast, and VRR for gaming despite the higher $4,299.98 price. Both share 4K resolution, 120 Hz refresh, and HDR support, but LG wins on picture quality while Samsung wins on cost
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