Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Audio output differs between the two (8 W + 8 W vs 30 W), which can influence overall sound clarity and loudness. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. If you're comparing TCL 50S446 and Mi TVX50, both models come with modern features and are designed to deliver a solid viewing experience across different use cases. In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing.

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