Audio output differs between the two (2 X 7 W vs 10 W + 10 W), which can influence overall sound clarity and loudness. Toshiba 43C350KU and TCL 43S455-CA differ in resolution (4K 3840 x 2160 vs UHD), 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 offer adequate brightness levels suitable for most indoor lighting conditions. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. Toshiba 43C350KU and TCL 43S455-CA are two competitive smart TVs offering a mix of display performance, smart features, and overall value for different types of users. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments.

Verdict: Choosing between Toshiba 43C350KU and TCL 43S455-CA depends on your usage, whether you prioritize display quality, smoother motion, or smart features.