I have been using Mozilla Firefox as my primary browser for years. Even the guys at the computer store where I shop have been recommending it and loading it onto the computers they sell.
One of the standard features I love is the restore previous settings. When the computer reboots (i.e from a Microsoft automatic update), I am prompted to restore the previous sites. Very cool!
I marvel at the add ons and extensions available. Although some do not work with my ISP, AT&T, since there is a clash with AT&T’s shortcut keys.