This makes sense -- I'm still on Beta 6 despite the bugginess, but it definitely is buggy. I keep trying to customize the button layout (like adding a history button, or moving the new tab button) and it mysteriously reverts parts of the layout to default when I change it, but not every time, and not every button. Odd. Also, Windows Live Mail is nearly unuseable.

The main reason I'm sticking with it for now is Panorama. Bound the hotkey for that to one of my extra mouse buttons (mine has ~9). As far as I'm concerned there's no other way to do tabs/grouping anymore.

The big thing I wish they'd do is lazy load the tab groups that weren't active the last time it got closed. I have about 10 tabs open now at all times, and it doesn't make sense to try to load them all at once. Panorama could basically merge tabs/bookmarks/history all in one and revolutionize the UI, but for now it's still awesome but kind of slow.

edit: I just turned on HW acceleration (windows only sorry), and the performance boost is pretty amazing.