Sorry to bring up this thread. I was just thinking!!! I was initially (a long, long time ago) an IE fan(1995-1997, if I don't go wrong). Soon after, then, I went to FF and I moved to it. I learnt how to use it, how it is made up, and I am still learning!
Now, I downloaded Opera 9.51. Nice browser, to give a try. But to tell the truth it has not all the features of FIREFOX. It may be apparently faster but this is because of its increased "cache". To get the same protection as with NoScript or ABP, you have to be an expert whereas in FF you can simply download automatically extensions. Too complicated. I'll keep surfing with FIREFOX.