Rated 5 out of 5 stars

This addon is nearly flawless. It looks great and there are many configuration options.

It would be nice if it was possible to make the background transparent, so that it would work with addons like GlassMyFox.
Another nice addition would be synchronizing the dials across different computers, maybe via a bookmarks folder that is synced with xmarks.

This review is for a previous version of the add-on (3.8.1.1-signed).