I used to use Opera, I played with the mouse gestures - then tired of them. I don't need/like them. My mouse has enough buttons to do what I want, and if I'm on the laptop then there are plenty of keyboard shortcuts to do the same thing and that removes the ambiguity of a gesture.
Side salads asisde, Chrome renders quicker for me - so I'll stick with that.
Has Opera been bought by Facebook yet? That'll be fun.