Firefox 3 had a rather perverted tab model, with the tabs visually connected to the header area rather than the content with which they are associated. Firefox 4 retains this as an option:
Safari is the same:
Unfortunately, the Firefox designers don't seem to share the Oompa Loompas' respect for the scarcity of vertical space. The Google interface is certainly cleaner, so having just upgraded to Firefox 4, I may now give Chrome another try.
Isn't competition a beautiful thing! Firefox and Chrome owe their success not to clunky, belated anti-monopoly gestures, but to their superior functionality and performance.
UPDATEIt seems Chrome on Mac still has a nasty habit of splattering
<meta>tags around when editing posts in Blogger, so I think I'll be sticking with Firefox for a while longer.