Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. If you're comparing Panasonic TH-55GX655DX and LG 55QNED81SQA, both models come with modern features and are designed to deliver a solid viewing experience across different use cases. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. From a practical standpoint, both options provide a reliable viewing experience for most users. Panasonic TH-55GX655DX and LG 55QNED81SQA offer different motion rates (60 Hz vs 120 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions.

Verdict: Both TVs are strong contenders, and your final choice should depend on your preference for screen size, motion performance, and smart features.