Omnidirectional microphones capture sound from all directions, making them a good choice for recording multiple speakers or natural ambient sound. They can also be less sensitive to background noise and wind interference. However, they may not provide as clear and focused of audio as a directional microphone. It's important to consider the intended use before purchasing an omnidirectional mic. Some mics offer interchangeable polar patterns, allowing you to switch between omnidirectional, cardioid, and other patterns depending on your needs.