I use Firefox on both my Linux and Windowz Box. In my opinion, firefox is the ONLY webbrowser.
For my G4 Mac.... its Saffari. I have a few gripes about Saffari, but with each release it gets better. A good user devel community helps alot.
Opera is bulky in my opinion. But then again..... that is only my opinion
Things can always change though..... we never really know what shore the tides of computing will wash us to next.... Its a rapidly rising and vicious ocean isnt it?