From a practical standpoint, both options provide a reliable viewing experience for most users. Panasonic TH-58HX450 features a 58 Inch (147 cm) screen while Samsung HG55BU800NF comes with 55 Inch (139 cm), which can make a noticeable difference depending on your room size and viewing distance. 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 provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. If you're comparing Panasonic TH-58HX450 and Samsung HG55BU800NF, both models come with modern features and are designed to deliver a solid viewing experience across different use cases. 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 models offer good value, and the better option depends on your specific requirements and viewing preferences.