Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. VU LED43D6535 and Insignia NS-48D420NA16 offer different motion rates (NA vs 60 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. Both models support 1920 x 1080 resolution, ensuring sharp picture quality with detailed visuals for movies, shows, and gaming. VU LED43D6535 and Insignia NS-48D420NA16 are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments. 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: Choosing between VU LED43D6535 and Insignia NS-48D420NA16 depends on your usage, whether you prioritize display quality, smoother motion, or smart features.