@Gargron I've been using Firefox primarily for several months now. But one thing I miss from Chrome is the ability to move an open tab to another window that's already open (not just move it to a new window). Also putting a label on a group of tabs. I'm one of these people who always has a gazillion tabs and several windows open. (Maybe I need to cure myself of that habit.)
There are some Firefox features I like, though, that Chrome doesn't have.