Firefox undo; back to IE

I'm back to IE after a few months of using Firefox. I missed the full-screen mode with slide-in favorites in IE, and I didn't find the tabbed browsing model etc. in Firefox very useful. There are some innovative features in Firefox, such as the Live Bookmark support for RSS, but I use the much more feature-rich FeedDemon for blog/news feeds. Somewhat ironically, the main reason I switched to Firefox in the first place was to use Blogger's BlogThis! bookmark/favorite, for one-click blog posting (it broke in IE in XP SP2); now I'm using the Google toolbar within IE instead, and it has a BlogThis! toolbar button.