Okay. After my Opera link frustration I must admit that I've come back. Firefox was nice and fast at the beginning, but it's got serious issues after using it for a while. And with many tabs it gets slower, it's not very pretty, it takes longer to load, FlashBlock causes me a lot of trouble. And other issues.
I just like Opera. It doesn't get slower after using it for a couple weeks. It's got a neat bookmark system (It better not dare swallowing my bookmarks again!!!), it's fast&snappy. I hope they'll fix the network issue which cause Opera to be faster on slow links but slower on fast links. And some webpage don't render well.
And I hope they'll quickly incorporate a lot of the improvements of Chrome. I think if it would run natively on Linux (it works quite well with WINE), I'd be very tempted to use it as my primary browser.