I mostly use Firefox with two profiles, it has better memory footprint, more robust add-ons, the UI is customizable, tabs load on demand, and for me the mission

I mostly use Firefox with two profiles, it has better memory footprint, more robust add-ons, the UI is customizable, tabs load on demand, and for me the mission is important too. Also, it doesn't spreads itself like a malware. My secondary browser is Opera 12, but seeing how it does not get any kind of update, it is high time I ditch it for something else.