I'm Still an Opera fan but 12.17
Like ScissorHands I still use Opera 12.17.
As soon as they switched to chromium the result was a tarnished turd of a browser. The previous "most user configurable browser on earth" became such a pile of crap that you couldn't even configure a home page or bookmarks. What happened to the company which developed a lot of the browser features we now take for granted? The "mouse gestures" on the old Opera are a fantastic feature for example.
Opera 12.17 is my daily browser unless like Scissorhands, a website demands a "more modern" browser.