We all want the responsiveness of Opera, the look of the KHTML engine, and the features of Firefox. I keep saying I'm going to drop ff as well and I currently have Safari, Firefox, and Opera on my dock. I'll leave Firefox for a week but then some page just won't render properly, I'll really wish I had draggable tabs, or I just really miss sage, and then I'm right back to Firefox. Best of luck quitting Firefox, but you have to report back in a month and tell us whether you've stayed clean of the habit or not.