Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. Panasonic TH-50HX450 features a 50 Inch (126 cm) screen while Panasonic TH-49GX655DX comes with 49 Inch (124.46 cm), which can make a noticeable difference depending on your room size and viewing distance. In general, both TVs cater to modern entertainment needs, including streaming, gaming, and everyday viewing. Both TVs provide decent motion handling, making them suitable for everyday viewing including sports and action content. If you're comparing Panasonic TH-50HX450 and Panasonic TH-49GX655DX, both models come with modern features and are designed to deliver a solid viewing experience across different use cases. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Both TVs come with smart platforms that support popular streaming apps and voice control features.

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