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. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. 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. Mi TV5A40 features a 40 Inch (102 cm) screen while TCL 43S423 comes with 43 Inch (109.22 cm), which can make a noticeable difference depending on your room size and viewing distance. 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 come with smart platforms that support popular streaming apps and voice control features. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content.

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