I haven't used a Netscape/Mozilla platform exclusively since IE 4.5 came out...oh...11 years ago. Opera has ALWAYS run better than Firefox in my opinion, I even use it in Linux instead of Firefox.

I've had a few friends say they like Google Chrome, but I haven't messed with it yet, mainly because
A) I'm happy with IE 8/Opera 9
B) I remember there being some controversy when it was initially released with the user agreement, so that dissuaded me from bothering.

If Google has sucess with this, more power to them, because it'll put some heat on Microsoft. But until Opera doesn't do something I need it to do, I don't see me switching from it as my "B" browser anytime soon. And really, it's not like I need something that would make me want to spend MORE time on the internet....