In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing. 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. Both TVs come with smart platforms that support popular streaming apps and voice control features. 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 TVs offer adequate brightness levels suitable for most indoor lighting conditions. Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. 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. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience.

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