The most useful extension I've ever used. I setup containers for the multiple cloud accounts I use on a daily basis. Before, I juggled three browsers in regular mode and 'private/incognito' modes.

Some wish list items to earn five stars:
* More colors to choose from, or a better way to indicate tabs than just the colored underline. Perhaps container tabs can be FILLED with the color (even filled with a pattern).

* The ability to re-order containers...or have 'sync' preserve the original container order. When I sync containers to a new install, the containers come up in random order. It would be great to be able to order the containers, if they cannot order themselves according to the original order. Along these lines, on the new install, the default containers ('Banking', 'Shopping', etc) remain even if deleted from the source. Maybe remove these if the source didn't have them.