[sjs]

It's subjective. I tried and hated tree style tabs.

I prefer Chrome these days but Firefox and Safari are still up there, and also fast[1]. It's just nice to have a variety of good browsers to choose from.

[1] http://arewefastyet.com (doesn't say "no" anymore)

[BrandonM]

I didn't say Tree Style tabs were better, only more usable (for me). I can have 30 tabs open and see a pretty wide portion of the page title. I sacrifice horizontal real estate (which is often wasted) for vertical real estate. I can understand not liking tree style tabs for various reasons, but saying that their improved usability is subjective is a bit of a stretch.

[sjs]

If someone only ever has 3 tabs open then tree-style is a waste of space. How is it not subjective? It depends entirely on the user's browsing habits.