Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Intex LED SU 5003 UHD SMART and Toshiba 50C350KP are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Intex LED SU 5003 UHD SMART features a 49 Inch (124.46 cm) screen while Toshiba 50C350KP comes with 50 Inch (126 cm), which can make a noticeable difference depending on your room size and viewing distance. 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. Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. 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.

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