I use emacs-w3m from within a terminal for most of my web browsing. Its main flaw (or advantage) is that it can't handle javascript. Despite that, I'd say 90% of the websites I visit work just fine without JS.

For what I'm interested in (which is mainly just information minus all the cutsey Web 2.0 design nonsense), the emacs-w3m browsing experience is fantastic. It's 100% readable plain text, displayed consistently just the way the rest of my terminal text is displayed. It integrates 100% in to my editor, allowing me to use it to its full potential.

emacs-w3m is way more powerful and customizable than other text-mode browsers like lynx, elinks, or standalone w3m itself. Also, the kind of emacs/vim integration that Firefox extensions like It's All Text offers also pales in comparison to what emacs-w3m offers, as there is no context switching with emacs-w3m -- you're always in your editor. Firefox extensions like Pentadactyl and Vimperator are good but, again, they're limited compared to emacs-w3m and its tight integration with emacs, they're not written in elisp, and so the impedance mismatch between the browser, editor, and extension is greater.

I don't know if any of this matters to you, but if it does, you should give emacs-w3m a spin.