From a practical standpoint, both options provide a reliable viewing experience for most users. Mi TV5A40 and TCL 43S423 differ in resolution (1920 x 1080 vs UHD), which can affect overall clarity and sharpness of the display. Mi TV5A40 and TCL 43S423 are two competitive smart TVs offering a mix of display performance, smart features, and overall value for different types of users. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. 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. 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.

Verdict: Both models offer good value, and the better option depends on your specific requirements and viewing preferences.