These are pretty good, but the Chrome implementation is better. Specific complaints: - can't tie a bookmark to a container. - too many clicks to open a new tab in a container (in Chrome the whole window stays tied to the container, not just the tab) - bookmarks and history aren't container-scoped.
IMO containers and profile functionalities shouldn't be mixed. Containers are a lightweight version of Profiles. Running 2 profiles is essentially running 2 separate browsers running with separate histories, add-ons, bookmarks, settings. A bit like threads vs processes.