Firefox - hands down. Been using Mozilla browser product (as primary browser) for years. Switched to Firefox as primary around V1.0.4 (current is V1.5.0.2).
As SJ pointed out, there are still some sites that continue to produce non-standards (W3C) compliant, IE-centric HTML (IMHO, the scarlet red letter of the amateur developer). I keep IE around only for when I absolutely
must deal with such a site (and those are few and far between, since I treat them
like I would treat a 40 year old biker with a social disease trying to date a teenaged daughter of mine ;-)).Tabbed browsing is a major productivity booster for me, popup blocking is stellar (and improves with each release), and there's a wealth of extensions available to further tune the product to fit your needs. Some of my favorite extensions:
- Tabbrowser Preferences (V1.2.8.9): Provides additional Tab features, like opening a new tab in the background, opening page embedded links in a new tab, etc.
- Copy Plain Text (V0.3.2): Lets you copy just "text" (cut & paste) from browser. For when you just want the text, not the 64 point bold italics purple font and other similar noxious markup.
- IE View (V1.2.7): Provides a context menu that lets you open a link in IE (launches the selected page in a new instance of IE) instead of in Firefox. Another context menu item configures the browser to always open that page in IE (so you don't have to select that option all the time).
Security wise,
more like Brink's armored car vs. wallet-on-a-chain (IE).
Windows, Linux, and Mac variants all behave & present uniformly.
Firefox is the number two "do first" modification to an out of the box Windows installation I recommend to all who ask (number one is AV software ;-)).