Logitech C922x Pro Stream Webcam - 1080p HD Camera for Streaming and Recording at 60 FPS - Background Replacement Technology
I actually own the C910 model (http://amzn.to/2fczqCG) and have used it for several years quite happily. But the price for the older model has shot up on Amazon.
This newer model looks almost exactly the same with better features (like better photo quality and a far better physical design to keep the camera stable on the top of your laptop!). I do believe I'll be upgrading sometime soon!
For more detailed product information and to read customer reviews, click "Get This On Amazon".