At least in Safari, if you command-click on the bookmarks collection folder in the bookmarks bar, it will open them all in tabs, without having to resort to the time-wasting scrolling to the bottom of the menu thing. I don't know if Firefox also has this capability. (Also, in Safari, Command-[numeral] will open up the same numbered regular bookmark in the bookmarks bar. So, for my bookmarks bar, if I do command-1 (one), it opens up my bank's login page.)