I never understood why people get so fired up about browsers. They all do a very simple and straight forward thing and are all basically the same.
For want of a better word, it's the "feel" to them. I just like the way Firefox operates. For one thing, if you want to clear the history, Firefox allows you to do it for the past hour, the past two hours, the past four hours, "today" (which I'm not sure means the last 24 hours or just since midnight) or everything. With Explorer, you have to delete everything or nothing. Also, with Explorer, if you're not careful you can easily delete shortcuts to favorite websites on the URL dropdown. It's not so easy with Firefox.