Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability. Both TVs come with smart platforms that support popular streaming apps and voice control features. Haier LE55B9700UG and Insignia NS-55D421NA16 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 provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. Haier LE55B9700UG and Insignia NS-55D421NA16 differ in resolution (4K 3840 x 2160 vs 1920 x 1080), which can affect overall clarity and sharpness of the display. Both TVs come in similar screen sizes, making them suitable for comparable viewing setups and room environments.

Verdict: Choosing between Haier LE55B9700UG and Insignia NS-55D421NA16 depends on your usage, whether you prioritize display quality, smoother motion, or smart features.