From a practical standpoint, both options provide a reliable viewing experience for most users. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. Panasonic TH-55MX850DX and Haier 55P7GT-P differ in resolution (4K vs 4K 3840 x 2160), which can affect overall clarity and sharpness of the display. Panasonic TH-55MX850DX and Haier 55P7GT-P are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. 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.

Verdict: Choosing between Panasonic TH-55MX850DX and Haier 55P7GT-P depends on your usage, whether you prioritize display quality, smoother motion, or smart features.