I'm slowly changing over to Opera again. Firefox is simply a beast and is becoming unusable for me. Opera is just blisteringly fast, and I like that. A lot.
I have zero browser loyalty. I've used them all and it seems like they have good times and bad times. Well, IE usually has bad times, but that's another story.
I'm also finding Chrome is pretty sluggish. Well, in comparison to Opera anyways.
The chart was very interesting. I remember Safari coming out, trying it, and shelving it because it didn't do anything properly. Apple had buttons in the browser for people to report "broken sites". Hahahaha~! After all, Apple can do no wrong!