I've had tons of trouble with the sound quality of the built-in mic while using the stock video camera app, and though it's just a little muffled, loud noises (like airports or oceans) get horribly garbled. But I haven't found much info about external microphones. So I bought one, just to try things out. It's a vast improvement. I'm finally able to make some YouTube videos with sound that isn't too bad. But someone must have already researched some mics, and there's probably a decent all-around mic that would be even better. I don't want an expensive recording system, nor a whole lot of extra cords and equipment to carry, just a nice mic for general use, for voice as well as ambient sounds. I also bought a Bluetooth earpiece, hoping its mic might work with the video camera, but it doesn't. I'm having some trouble finding info on what hardware works and what does not.