There is a difference in screen size (40 Inch (102 cm) vs 43 Inch (109.22 cm)), and a larger screen generally provides a more immersive viewing experience. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. Audio output differs between the two (24 W vs 2 Channel X 8 W), which can influence overall sound clarity and loudness. If you're comparing Mi TV5A40 and TCL 43S423, 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. Mi TV5A40 and TCL 43S423 differ in resolution (1920 x 1080 vs UHD), which can affect overall clarity and sharpness of the display.

Verdict: Choosing between Mi TV5A40 and TCL 43S423 depends on your usage, whether you prioritize display quality, smoother motion, or smart features.