Intex LED SU 5503 UHD SMART and Haier H55M90EUX offer different motion rates (60 Hz vs 144 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. Both TVs come with smart platforms that support popular streaming apps and voice control features. 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. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Intex LED SU 5503 UHD SMART and Haier H55M90EUX are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. From a practical standpoint, both options provide a reliable viewing experience for most users.

Verdict: Both models offer good value, and the better option depends on your specific requirements and viewing preferences.