There is a difference in screen size (50 Inch (126 cm) vs 49 Inch (124.46 cm)), and a larger screen generally provides a more immersive viewing experience. From a practical standpoint, both options provide a reliable viewing experience for most users. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. Infocus II-50EA800 and Sanyo 49S7100F are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. 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. Both TVs come with smart platforms that support popular streaming apps and voice control features.

Verdict: Choosing between Infocus II-50EA800 and Sanyo 49S7100F depends on your usage, whether you prioritize display quality, smoother motion, or smart features.