No contest. Firefox is much better than internet explorer

[...] Firefox is, in my estimation, the very best Web browser in existence. I use it not only on my Windows machine, but on my two Apple Macintosh computers at home, even to the exclusion of Apple's own browser, Safari.

But overall I like it much better than any other browser I've used. I've said it before and I will say it again: Microsoft's Explorer may indeed still command the vast majority of the Web browser market. But the "Browser Battle" is on again. Microsoft should be watching Firefox carefully because Firefox is better than Explorer by leaps and bounds. I don't miss Explorer one iota. Give Firefox a day's worth of Web surfing, and you won't either.
         
             Arik Hesseldahl. FORBES MAGAZINE.

10+ Reasons Firefox is Better than Internet Explorer.

1. Way faster.
2. Safer, more secure. Internet Explorer has some major security holes. None with Firefox.

[Internet explorer users spent much more time during 2006 with holes in their security pants, compared to securely-clad Firefox users, web consultancy, ScanIT, reckons. The consultancy says Microsoft's IE was "unsafe" for 98 percent of 2006, while rival browser Mozilla Firefox was "unsafe" for only 15 percent of the time. ]

3. Very effective Popup blocking.
4. Simple control panel.
5. Easy to use Download Manager.
6. Sharper images, smoother animations.
7. Google Toolbar built in. This makes life much easier to search Google and makes searching fully integrated into the web browser.
8. Smaller size.
9. Better Tabbed browsing.
10. LIve Bookmarking allows you to see when content from the RSS feeds has been updated.
11. You don't contribute to fund Bill Gates.
12. You can drag and drop any site right into the top of the browser and it adds a button automagically.
13. RSS feeds from blogs and podcasts are automatically detected and this allows you to subscribe to the RSS feeds from blogs and podcasts.
14. Tons of free optional extensions.
15. Does not mess up with your system (unlike ie!)
16. It's really free.
17. Unlike ie, Firefox does not send your browsing record or other private information to anybody.
...

Download Firefox now!

Or, better, download the free Google Pack (includes Firefox and other popular free tools)