i honestly hate google chrome, i find it to be so minimalistic that it circles back into just being obtuse.
i'm one of like five people using opera, have been for years. i've always found it to strike the ideal balance between usable space and intuitive function. and, as usual, it paves the way for the other companies to march behind. tabbed browsing, mouse gestures and on and on.. i think most people think firefox "invented" these things.