I choose opera since it is powerful.
For a simplest browser, I choose Chrome, it should do better for now and for future. (she is target on common users, how can you fight with that giant, and many companies bundle their products with google, I can't see a good future for opera)
Keep downgrade to Opera12 unless it is useless, then moved to a powerful browser.
Currently several sites like Yahoo mail working badly with opera, need the help of Chrome, it seems dead of my opera not far away, poor! 
Guys here keep compliant cause they still love opera, but it seems no hope.
Love the bookmark sync, mail, tabs, fit to width, pic off, user mode, and many more...