Ok...my experience and voting goes to Opera. I am a tester, I love to test and I have on my company computer, Opera9, Firefox 2 and IE7 ( and almost every variation of browsers which rely on the IE engine ) - allways testing them. And when I speak about testing it´s really a test I make on the long run (Firefox for 2 years, IE7 also or almost and Opera for the last 4 years. Why Opera? Well, first because of safety and privacy. Second because of SPEED in such a way that my wife, a Firefox user, and Francisco my eldest son - he´s is finising next year his gradutation on computing, communication and multimedia - who is also a Firefox user does admit that Opera is a better written program ( in 1998 Opera already have tabbed browing...) and in terms of speed, is unbeatable ( these are his words, not mine - being that the only thing he likes in Firefox are the add-ons. The problem is that Firefox just eats resources as hell - and the more addons you have, worst is the case - and also the problem is that most of Opera users do not know exactly what this browser does as they do not know its full potential. My wife, just switched to Opera, Francisco is on the move and I have unninstalled Firefox from my laptop. Besides Opera do have an integrated feed reader, an integrated torrent downloader and last but not least...it can natively read the exif info on any photography that has that info appended and also a validation tool that connects automatically to W3C website to validate ( or not ) webpages. It can provide also mail and chats accounts - I do not use these. Here at work and although I have the other two...Opera rules as is the most used - 99,99% of the time. You can read more about these three giants:
http://www.extremetech.com/article2/0,1558,1990850,00.asp and
http://www.extremetech.com/article2/0,1558,1998157,00.asp:Happy :Happy :Happy