We love the Logitec HD webcams. They come with a variety of features - you're sure to find one that best fits your need and price range. In our offices, we have tested and use:
Logitech HD Pro Webcam C910 (Mac and PC compatible)
(Note- Logitech also makes a C920 Camera which ONLY works with PCs- there is no mac support for the C920):
Logitech 720p Webcam Pro 9000:
They range from $30-$100. What's also great about getting a separate camera, versus using the one that is built-in with your laptop, is that these are portable and you can move to show the inside of your pot, a detail in the design, etc. We will update this as we test and use new products! But please share with us your favorites too.
You can see current pricing and reviews below from Amazon.com. Don't forget to check the new and used cameras.