The death of Xmarks leaves a vaccuum and creates an oportunity for ES.
There is no extension like Xmarks (when it worked well). It had a user-friendly web UI. I could expand the different backups and see their content. I could choose a backup to make it the current syncing bookmark set. I could remove backups. I could view the contents of the current set. Many other options.
I would say that in terms of features, ES sync/backup is somewhere between the built-in Firefox sync and Xmarks.
Right now I actually prefer the built-in Firefox sync because it's MUCH faster than ES sync. For example, after the initial sync, then pressing the sync icon makes it spin for maybe 4-5 seconds tops).
The one thing I use in ES is the auto-backup feature. Too bad there is no setting for the time period between backups (I think it's 15 min and it cannot be changed), but it's better than the built-in Firefox backup, which only backs up bookmarks once a day. So that's the only reason I'm using ES right now.
This is an opportunity for extensions like ES to fill the gap that Xmarks left, but it would require a lot of work by the team. Hopefully this thread will provide more ideas for improvement.
Customer support service by UserEcho
In addition, you can access your data on everhelper.me website, where you can manage all your bookmarks and dial. Also you can synchronize dials between FVD Speed Dial and Live Start Page addons.
Live Start page: