Sansui SMC50FH18X features a 50 Inch (126 cm) screen while Panasonic TH-49GX655DX comes with 49 Inch (124.46 cm), which can make a noticeable difference depending on your room size and viewing distance. Sansui SMC50FH18X and Panasonic TH-49GX655DX offer different motion rates (NA vs 60 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Sansui SMC50FH18X and Panasonic TH-49GX655DX are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Sansui SMC50FH18X and Panasonic TH-49GX655DX differ in resolution (1920 x 1080 vs 4K 3840 x 2160), 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 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.

Verdict: Both TVs are strong contenders, and your final choice should depend on your preference for screen size, motion performance, and smart features.