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. Mi TV5A40 and TCL 43S423 differ in resolution (1920 x 1080 vs UHD), which can affect overall clarity and sharpness of the display. Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. 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. Audio output differs between the two (24 W vs 2 Channel X 8 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 provide decent motion handling, making them suitable for everyday viewing including sports and action content. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions.

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