Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. Both TVs come with smart platforms that support popular streaming apps and voice control features. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Skyworth 75S1 features a 75 Inch (191 cm) screen while Haier H77C90EUX comes with 77 Inch (195.58 cm), which can make a noticeable difference depending on your room size and viewing distance. If you're comparing Skyworth 75S1 and Haier H77C90EUX, both models come with modern features and are designed to deliver a solid viewing experience across different use cases. Skyworth 75S1 and Haier H77C90EUX offer different motion rates (60 Hz vs 120 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions.

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