I’ve been using Firefox 3 for some months now (first beta versions, and now the final), and it’s quite slick. Definitely a worthy upgrade.

Though there are some differing opinions on this matter, I find that the Awesome Bar (the new-and-improved all-singing all-dancing bookmark-and-history-searching address bar) to be spectacular. It incorporates some nice features that the Epiphany browser has (keyword searches over your bookmarks by typing in the address bar), allowing for much faster selection from a large list of bookmarks. I’m a bookmark fiend, particularly when good search support is available, so this feature is making my browsing noticeably easier.

Incidently, Justin Taylor has a decent post about it. Check out the comments — there’s a fun little debate about the benefits of using PC’s to sanctification.