Okay, first I want to say I am very happy with Opera.
It is much faster and stable than Chrome and Firefox. They used to lag very much when a website used flash(for example YouTube). Opera is working like a charm.
I have two questions:
How can I switch between tabs using CTRL+NUMBER? I am not used to CTRL+TAB. I enabled advanced shortcuts and now I switch using number 1 and 2 (left and right). It's a little easier but I prefer CTRL+NUMBER.