as for the close buttons Chaoskiddo commented on, I personally hate that model because of my browsing pattern. I tend to do breadth-first-search traversals of sites (forums and whatnot), or open large numbers of tabs at once, and then read the site node and close the tab. With per-tab close buttons, that ends up being a hunt for precisely which tab I've got open, in order to close it. In fact, that's the main reason I never really took to Opera.

But that's ok. About:config lets you change that behavior. browser.tabs.closebuttons = 3 sends it to the old way that I'm used to... good times.