Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. Insignia NS-55F301NA22 and TCL 58S455-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 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. There is a difference in screen size (55 Inch (139 cm) vs 58 Inch (147 cm)), and a larger screen generally provides a more immersive viewing experience. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. Insignia NS-55F301NA22 and TCL 58S455-CA are two competitive smart TVs offering a mix of display performance, smart features, and overall value for different types of users.

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