Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. LG 20M37D and Insignia NS-19D220NA16-A offer different motion rates (NA vs 60 Hz), which can impact smoothness during fast-moving scenes like sports and gaming. LG 20M37D features a 20 Inch (50.80 cm) screen while Insignia NS-19D220NA16-A comes with 19 Inch (48.26 cm), which can make a noticeable difference depending on your room size and viewing distance. LG 20M37D and Insignia NS-19D220NA16-A differ in resolution (NA vs 1366 x 768), which can affect overall clarity and sharpness of the display. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. If you're comparing LG 20M37D and Insignia NS-19D220NA16-A, both models come with modern features and are designed to deliver a solid viewing experience across different use cases. Both TVs come with smart platforms that support popular streaming apps and voice control features. Overall, both models are capable choices in their segment, offering a balance between performance, features, and usability.

Verdict: Choosing between LG 20M37D and Insignia NS-19D220NA16-A depends on your usage, whether you prioritize display quality, smoother motion, or smart features.