This article pretty much sums up the difference, strengths, and weaknesses of the two most popular web browsers . I am a fan of Firefox, because of the customization, tabbed browsing, and a host of other features (and the fact that it's NOT from Microsloth).
Now, before people start jumping all over me for posting this in "Ticat Chat" (I have been guilty of that myself), please hear me out.
From what I understand, the great people from "Mr. X" are ardent Firefox users/programmers (Ron, CM, please correct me if I'm wrong). As well, having used both IE and Firefox on this message board, Firefox "feels" better.
Please, I would like to hear your comments.