I have been using opera for as far back as I can remember. I like it because its fast and doesn't seem to slow down or become sluggish or unstable no matter how many tags I have open which is currently 110 (which can be seen in the image below). I should start saving them in bookmarks for later, but then I will just forget about them and probably never revisit them again. Also I can shut Opera down and when I open it up again all tags reload in seconds.