Both TVs provide standard built-in audio performance suitable for regular usage, though external speakers can enhance the experience. LG 20M37D and LG 19M37A are well-equipped smart TVs that aim to provide a balance of picture quality, performance, and smart capabilities. 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. Both TVs offer adequate brightness levels suitable for most indoor lighting conditions. Both TVs come with smart platforms that support popular streaming apps and voice control features. There is a difference in screen size (20 Inch (50.80 cm) vs 19 Inch (48.26 cm)), and a larger screen generally provides a more immersive viewing experience. LG 20M37D and LG 19M37A differ in resolution (NA vs 1366 x 768), which can affect overall clarity and sharpness of the display.

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