We all need good browser to browse internet fast and if you are a developer/designer you must need a good web browser to see you design in real time as well to inspect web element, debug, write javascript, so all programming require a good console in browsers.
I like mozilla after google chrome, I like its some amazing feature like it has good console for designer and developers, so we can work effectively, we can add "Fire-bug" a plugin to debugg css/javascript in real time.
PROS -
Faster loading of web pages even in low internet connection.
Good security features.
Private browsing(nothing will saved like history, downloads etc, in browser)
Pop-up blocker which block pop-up automatically on websites.
Best browser for web developers.
CONS -
sometime auto-crash and then we need to re-open browser, else its fine.