I've been using Opera as my primary browser almost a couple of years now, I think, since it was in beta still and what I like with it, is that it is a browser and only that. And it's fast. the tech support is good which is important as well. A drawback would be that some sites doesn't support it, but Opera can't be blamed for that, rather Microsquish, I'd say. Pages come like lightning on my G4, at least. Keep it slim!