I have been running FF for years. I do development work and thought there was nothing to replace the Firebug FF extension. Well, I installed Chrome and have been playing with the developer tools -- very nice and in some ways better than Firebug.
The other good thing about FF was adBlock Plus. You can run that under Chrome, Chromium and other browsers.
I have a number of systems. I put Opera on one and played with it this morning. Quite fast.
Just try different Browsers and checkout the addons. You may be surprised.
Even if I have to use Chrome for awhile at least I feel good getting rid of FF.
I downloaded and installed Opera yesterday, but I couldn’t find the bookmarks/favorites. Maybe I’m completely blind but couldn’t figure out where they were! I uninstalled it.