Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. 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. Panasonic TH-55HX635DX and TCL 55R617-CA are two competitive smart TVs offering a mix of display performance, smart features, and overall value for different types of users. Both models support 4K 3840 x 2160 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. From a practical standpoint, both options provide a reliable viewing experience for most users. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Panasonic TH-55HX635DX and TCL 55R617-CA offer different motion rates (60 Hz vs 120 Hz), which can impact smoothness during fast-moving scenes like sports and gaming.

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