Logitech C920 has been the best and it has a tripod mount.
NEW
Looks like Logitech have a new one, the Pro Webcam: The Logitech Webcam C930e.
Here are the specs:
PRO WEBCAM
Ultra Wide Angle HD Webcam
For desktop video meetings, live feeds, webinars and more
LIST PRICE: $ 129.99
The Ultra Wide Angle webcam that brings pro-quality HD video and stereo audio to desktop video meetings.
• Full HD 1080p video calling (up to 1920 x 1080 pixels) 720p HD video calling (up to 1280 x 720 pixels) with supported clients
• 90 degree field of view
• H.264/SVC video compression
• Supports H.264 1080p for Skype® for Business, along with optimizations for best call performance in single or multiparty HD video.
• Zoom to 4X in 1080p
• Optional light application for control of pan, tilt and zoom
• ZEISS® lens certification
• Autofocus
• External privacy shutter
• Rightlight™ 2 Technology for clear image in various lighting environments, even low light
• Built-in dual stereo mics
• Automatic low-light correction
• Hi-Speed USB 2.0 certified (USB 3.0 ready)
• Tripod-ready universal clip fits laptops, LCD or CRT monitors
From Amazon.com, The Logitech Webcam C930e:
The latest technology for fluid full HD video calls
First 1080p HD webcam with on-camera video processing
Make a professional impression in vivid full HD video at up to a smooth 30 frames per second—without taxing your PC processing power. UVC H.264 encoding technology frees up bandwidth by putting video processing within the camera.
Easily focus in on details
Pan, tilt and zoom
With the ability to digitally pan, tilt and zoom, you can easily focus on visuals and presentations with the highest level of HD video detail. (To control experience, downloadable software application may be required.)
Extended 90-degree field of view
Widest-view business webcam
Now your video meetings can easily include whiteboard presentations or product demos. With an extended 90-degree field of view your clients and colleagues can clearly see you and whatever you’re presenting. And when the webcam is not in use, a convenient privacy screen covers the lens for added privacy and security.
Certified for Lync and Skype
Compatible with most video conferencing apps
Plug-and-play deployment
Enjoy easy USB connectivity to PCs or Macs and seamless compatibility with your familiar video apps—certified for Microsoft Lync 2013 and Skype, compatible with most UC and web conferencing applications, and supports H.264 1080p for Lync 2013.
Automatically adjusts for poor lighting
Autofocus. Auto light correction.
Smooth autofocus keeps your video image razor sharp, even in close ups. Logitech RightLight 2 technology automatically adjusts for low light or backlit situations so you’re always seen in just the right light.
Buy it at Amazon.com (affiliate link)
Logitech C930e 960-000971 USB 2.0 1920 x 1080 Video Webcam
Stay tuned for a hands on review. Here's PCMAG a review from 2013.