Firefox

Every single one of these is an upgrade in my view.

I have been cynical about search integration with browsers, but I feel like it's a necessity in life at this point; and search engines have become so unreliable that I think it's important now to spread out and use more than one, for me anyways

I love that I can do quick toolbar searches with @history and @bookmarks and although I don't think I would use it much, it's nice to know that you can shortcut common browser commands instead of having to go through multiple menus.