Sanyo XT-49S8100FS and TCL 50S451-CA are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Sanyo XT-49S8100FS features a 49 Inch (124.46 cm) screen while TCL 50S451-CA comes with 50 Inch (126 cm), which can make a noticeable difference depending on your room size and viewing distance. In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Sanyo XT-49S8100FS and TCL 50S451-CA differ in resolution (1920 x 1080 vs UHD), which can affect overall clarity and sharpness of the display.

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