The Logitech C920 Webcam is on sale today at 50% off for Amazon Prime members. This is what I use at home for streaming on Twitch, making Youtube videos, and video chatting. The picture and audio quality are very good, although I use a professional microphone in my setup, instead of the Logitech 920’s built in mic.
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About the only thing that could be improved on this is that it lacks a built in privacy cover. You can buy one of those too on Amazon, for about $18. I did and it helps prevent accidental exposure and unwanted spying.