adding menu’s (want opinions)

I was wanting a little input from other people as to what I should do for admin menu’s for my plugin. I’m trying to decide if I should use a top menu, or just put my three sub menus in their respective spots.
Thus far there will be three sub menus. One pertaining to display options (I’d put it under presentation), one with options pertaining to who can do what (I’d put it under users), and the last one would be for uninstalling my plugin (and it would go under plugins). So which would ya’ll prefer. I know I’d rather have them in one central location, since they are for one specific plugin, but is that ya’lls opinion?