@ djnick
You may be right in some of your points. As I haven't tried Opera (yet) I will just point out where you were wrong about FF.
- You can select any link using TAB/SHIFT+TAB or even enable a cursor.
- You can scroll through tabs using CTRL+PGUP/PGDOWN (two keys)
- FF 2.0 rememberes all opened tabs, texts in forms and other stuff. It reopens them next time you start the browser.
That's right, FF has no real zoom, it can only change the size of text. It doesn't support irc, torrents and other stuff. However, these can be probably added with plugins (that's the FF philosophy, to have a simple to use browser which can be expanded to your needs).
I can't compare scroll smoothness and other things as I haven't tried Opera.
IMHO, both these browsers are good. I'm not advocating FF here. Just please people, don't use IE

.