Audio output differs between the two (24 W vs 2 Channel X 8 W), which can influence overall sound clarity and loudness. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. 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. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. Mi TV5A40 and TCL 43S423 are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. 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. In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing.

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