I use a combination of Logitech C910 and C920's for various shows, generally very reliable. Run into some auto focus issues every now and then but otherwise they're pretty good. Will be upgrading to some 3CCD's cameras soon.
If I had a more centralized production setup I would have definitely have opted for higher quality cameras. But as I produce quite a few shows with people across the country, having a fairly cheap, reliable and high quality camera to send out to hosts has made it a good choice.
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