I have a Logitech C920 and am looking to upgrade. Something suitable for streaming.
Some annoyances with the Logitech: sometimes autofocus fails and poor reproduction of blacks. Ex: Lack of detail when a black cat is on screen.
I already have a nice mic-- the webcam doesn’t need one.
I’m using a C920 on Debian and I don’t have focus issues. I remember that once it was permanently stuck out of focus but unplugging and plugging again fixed the issue. Never had any other issues in years.