Try Rockmelt, it is a new browser and will blow your mind. It's in limited circulation for now though, and you will need an invite, but it really redefines browsing.
Several things:
It's not a "new browser" judging from the screenshots I've found it's clearly based on either Chrome or Chromium, probably the latter. Both of those are good browsers but "Rockmelt" shouldn't be allowed to take full credit for what they essentially took from another browser.
Seems the big difference here is that they have bookmarks and links running down the two sides of the screen. Yep, that totally redefines browsing*, what with the facebook and social networking links everywhere.
Remove those, and you've just got chrome/chromium with a few UI changes. (Note how I say "changes" and not "improvements")
With regard to Beta software, when it comes to browsers, I personally don't see the point. the last FF beta I used was the beta of 3.0; sure, they changed the back/forward buttons and a few other things, but truthfully it wouldn't have mattered if I had kept with FF 2 and simply upgraded when it was released. Really, If I have a choice between one version marked "stable" and another marked "Beta" I'll go for the former every time... (unless the latter has a feature I really need). It's a different version. For some reason people seem to think that "Beta=Cool". It doesn't. It means it's generally untested and/or in earlier development.
I like the idea of having an Open Beta, but I'll let other people be the free guinea pigs. I'll just use the release version.
* That was sarcasm.
