Mozilla 1.0 is pretty spiffy. It plays very nice with Netscape settings (well, of course...) and isn't all territorial like IE is. It's skinnable, so I went and grabbed the "Pinball" theme, which looked like it had the smallest buttons and dingle-dangles. =)
You can tell Mozilla to not allow web pages to open unrequested windows (HAHAHA!!! DIE, POP-UP ADS, DIE DIE DIE!!), not allow changing and resizing existing windows, not allow someone else to change the layering order of your browser windows, not allow changing status bar text. It's great.
You can also open links in a new window or a new tab in the current browser window. This is most excellent. Now I can group my browser views... all my project links can go in separate windows and everything I need for one project will be in one place; all my LJ and personal reading links go in another window. I don't have a hillion-jillion windows open and there's only one process running =)
Now, if only I can rename the Tabs... but that's no big whoop, it's just the title of the webpage and there's not a lot you can do about that. You can't change the browser title bar anyway.
[Update - 1316h]
Woot! And it's really skookum on my Mac too. It's a bit slow, but I think that's because my Mac is too old... it's blazing fast on my P3. =P