Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. Audio output differs between the two (2 X 8 W vs 10 W + 10 W), which can influence overall sound clarity and loudness. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. Toshiba 65C350KU and TCL 65S455-CA differ in resolution (4K 3840 x 2160 vs UHD), which can affect overall clarity and sharpness of the display. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. From a practical standpoint, both options provide a reliable viewing experience for most users. Toshiba 65C350KU and TCL 65S455-CA are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Both TVs come with smart platforms that support popular streaming apps and voice control features.

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