I have recently switched to using Firefox (from Chrome) and DuckDuckGo (from Google). The confusion I am seeing here is that DuckDuckGo has a “Browser Privacy Extension,” not a separate “browser.” It is available for Firefox, however I have checked Chrome and it is not available for it.
I cannot say if Firefox is my favorite browser just yet, but I am very interested in getting away from corporate espionage on my web activities. Companies like Google need to be taught that when they lie they lose, so I’m in the process of ditching them completely.