I have tried them all. I use Firefox .8 as standard, but occasionally switch to IE because some web designers are too idle to test their sites in anything else. Funnily enough, this very pane in which I am writing this posting is far too narrow in Firefox...obviously some glitch in phpBB (or this implementation of phpBB
).
Tabbed browsing is available in Opera, Mozilla and Firefox. I reject Opera because it is buggy, looks babyish and carries advertising. I find Firefox pretty much indistinguishable from Mozilla in terms of functionality, but I reckon that Firefox is slightly faster. Also I believe that Firefox is the future of Mozilla and will replace it entirely when v1.0 is released.
If you use Firefox, I strongly recommend the .ZIP download, not the Windows Installer version. I will go into details if anyone cares, but in brief it works better with plug-ins.