Westinghouse WR58UX4019 and TCL 55S455-CA are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. There is a difference in screen size (58 Inch (147 cm) vs 55 Inch (139 cm)), and a larger screen generally provides a more immersive viewing experience. Westinghouse WR58UX4019 and TCL 55S455-CA differ in resolution (4K 3840 x 2160 vs UHD), which can affect overall clarity and sharpness of the display. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. 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. From a practical standpoint, both options provide a reliable viewing experience for most users.

Verdict: Choosing between Westinghouse WR58UX4019 and TCL 55S455-CA depends on your usage, whether you prioritize display quality, smoother motion, or smart features.