Saperle says: While I have few complaints about the standard Android browser, these browsers have a little something extra that makes them stand out from the crowd.
Dolphin Browser® Mini This is a solid, clean, highly customizable (upon set-up it lets you choose the function of your volume button, for example), tabbed, and fast browser. It has a very interesting ‘gesture’ feature that I find incredibly cool, if not massively practical.
Miren Browser Another browser with a nice, fast, tabbed user experience--less customizable than Dolphin, but easy to use and intuitive.
Firefox Browser for Android Very buggy on a Motorola Droid at this point, but has many interesting add-ons, the ability to restore all tabs if the browser crashes, and the option to sync tabs between your phone and other computers running Firefox.