13 Reasons To Use Firefox Over IE I switched, a couple of days ago after Firefox was released, my default browser to Firefox from Safari on my Mac OS X laptop. For the most part, I like Firefox better right now. The most striking of these to me are command-up arrow and command-down arrow. The biggest advantage, in my opinion, of Firefox is the extensibility, I love Chris Pederick’s Web Developer toolbar especially, and have played with some of the other extensions that are available.