Rated 5 out of 5 stars
Absolutely great add-on. Some time ago I was thinking about moving to Opera but it seems it's impossible to get Awesome Bar in Chromium (there is Fauxbar add-on which is not continued so it's already not working great and will be dead in the future). As I'm really used to this feature in Firefox, I started looking for a way to combine address bar and search bar and I'm happy I found this add-on.
It has everything I need and even more. I really like being able to disable searching in internet to look in bookmarks and history first and then adding search operator and change standard Awesome Bar into search bar.
Must-have add-on for me.
PS: I don't have problems with "Manage Search Engines" - maybe it was a bug in FF itself?