I've tried Conkeror and while I like the concept and can't really find any problem with the execution I just don't get on with it very well. Being an Emacs user I feel compelled to ignore Vimperator ;)

The ' key in Firefox (search for links) is great for navigating around without the mouse. Not that I'm religious about non-mousing of course, sometimes (especially during idle web surfing) it makes sense for me.