I think Firefox catching up (and now completely overtaking) chrome/chromium in performance is a recent thing. Chromium just seems to be going slower than other browsers.. Midori, Firefox, Arora, etc.
My theory on browsers is there is no univerally good browser. Firefox seems to work a lot better on many sites and not getting things wrong and having the best privacy features. Chromium has the better sandboxing features but is getting slower, Opera works really well and is good for slow connections and is nice and fast but has no sandboxing I know of (at least when i used it last).
So chromium for security, Firefox for privacy, Opera for slow connections, Midori for raw speed, but none that is as good as eachother for their respective best use.
Lynx or Dillo are great for serving up raw text or finding technical docs / how to's.