Firefox 3 - A small question.

I'm using Firefox 3 right now and I'd switch back to Firefox 2 if it means getting to use all my favorite skins again before FF3 gets something nice. But before I do, I have a question about downgrading.

Are the changes from Firefox 2 to 3 really significant?

Answer your question yourself. You have used both, so make your own decision. Have YOU noticed a significant change from Firefox 2 to 3? Btw I'm still using Firefox 2 lol.