The time I'd pay for a web-browser, will be the time I want it to auto-hack the internet, load a typical site on an instantaneous speed whilst on a 56kbps dial-up and pop-up blocker that actually works on even the most malicious site.
i.e. I'm not paying.
Firefox, Safari, Camino, Opera... they're all doing a fine job. Even
Flock is doing a decent job, for free.