If you haven't checked out the new Firefox, ver. 4, browser, just out a few days ago, you owe it to yourself to do so. This version is really slick. Crisp-looking and lean, this version is as fast as blazes. It runs rings around Chrome in that department. I'm always looking for latest and greatest, and I can tell you Mozilla's Firefox 4 fits that description. Reviewers who know about these things have been universally favorable, as far as I can tell. You can download it here. Take it for a spin. I think you'll like what you see so much that you will definitely see the advantage of switching over to it, if you're not already there.
Update I: I just made Firefox 4 my default browser a few minutes ago. (3/28)