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I switched back to Firefox few months ago.
In Ubuntu, Chrome is a resource hog. I usually have several tabs opened at the same time. Just compared the RAM usage: 7GB in Chrome, 1.1 in Firefox.
Additionally, Firefox is a bit faster (in UI), and it just respects my look and feel (colors, borders, font sizes, etc).
And for address bar searches, Chrome privileges the google search instead of navigation history, which I really don't like (I usually visit the same sites, and even with several hits in a day for the same site starting with the same word, Chrome prefers, for few ones, to search when I type the word instead of display the known URL as first result).
I just changed few settings in Firefox (increased scroll speed, click in URL behaviour to select the entire address), and voilà.
Just annoying that every Google service keep suggesting to use Chrome until you dismiss this message.