I use both IE and Firefox. Perhaps I am just not as sensitive to certain things when I browse. To me a browser is a browser. But I am curious. What improvements do you notice with Firefox?
It may just be familiarity at this point. Firefox offered tabs early on and I got very used to that. I see that IE now has tabs, but I don't like the way that they work as well. Firefox is easy to customize with add-ons. I started on firefox maybe seven years ago and have not spent nearly as much time trying to get along with IE. There have been certain sites that won't run with firefox, so that's when i return to IE for compatibility. But that is getting to be pretty unusual these days.