Rated 2 out of 5 stars
I'm using Dolphin Browser v10.1.2 on my both devices - HTC One X and ASUS TF300T.
1) On both devices I have the same issues with bookmark sync: separators from Firefox's bookmarks are becoming "no name" folders in Dolphin Browser. If I delete those "no name" folders from Dolphin and sync bookmarks again, then separators between bookmarks will disappear in Firefox.
2) And there is another issue with synchronisation between Dolphin Browser and Firefox: bookmarks in Dolphin are shown upside down. I think sorting bookmarks in alphabetical (A--Z) order is acceptable. Z-A is a misunderstanding. The best ways would be sorting the bookmarks automatically.
3) Also: if I manually changed bookmark on desktop, this bookmark would not be updated on Dolphin in second sync. Dolphin Browser will still show this bookmark with the old address, even if in Firefox this address is very different.
4) It's not possible to change position of Dolphin icon in Firefox or to hide it. Icon always coming back to the same place. And there is no context menu for this icon, so it's not possible to click the right button on it and choose "Hide".