The browser war

Firefox 3 is out now. And I just came accross this comment on Internet Explorer at one of the websites I use:

What can we say, the divide between Explorer 6 and the rest of the world is becoming gargantuan. Sorry Explorer 6 users, Passpack will work for you, but it’s just never going to be fast for you.

Firefox 3 seems nice. But I have Firefox 2 working now more or less stable, even with a ton of add-ons installed, especially for working better with Gmail.
The questionis: am I ready for Firefox 3??