Immediate recommendation: choose the LG C3 OLED 55" for reference-level contrast and gaming responsiveness – 4K resolution, 120 Hz native panel, measured input lag ~7 ms at 4K/120 Hz in game mode, full Dolby Vision and HDR10 support, and local dimming that delivers near-infinite native contrast. Typical 55" retail ranges from $1,200–$1,800 depending on promotions; sizes available 42"–83". Bright-room alternative: consider the Samsung S95C QD-OLED or a mini-LED model such as the Hisense U8H for ...