Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. Sanyo XT-43S8100FS and TCL 40S351-CA are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. 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. Sanyo XT-43S8100FS features a 43 Inch (109.22 cm) screen while TCL 40S351-CA comes with 40 Inch (102 cm), which can make a noticeable difference depending on your room size and viewing distance. Both models support 1920 x 1080 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions.

Verdict: Choosing between Sanyo XT-43S8100FS and TCL 40S351-CA depends on your usage, whether you prioritize display quality, smoother motion, or smart features.