A web browser is your window to the Internet. It represents you. It talks on behalf of you. It shows you how the Internet world looks. Therefore, you must have trusted or honest browser, which is silently not selling you to the world. Your information is precious and your browser plays an important role in your online security. Here is a small effort I have made to let you make an informed choice among the following browsers: Internet Explorer, Google Chrome, Chromium, Mozilla Firefox, Iceweasel, Opera, Safari.
Quick Answer: Mozilla Firefox.
I am conducting a detailed study and will put the results soon on this page. Meanwhile, stay alert.