I have a tendency to use one app for everything. Not consciously, but it just flows this way. And by everything I mean organizing and storing information.
Consider three basic types of personal data: todos, notes and bookmarks. Using content-type sensitive application almost always leads me to using it as all-types heap. Todo manager gets overflown with notes and bookmarks, bookmarking services store URLs that are in fact todos for reading and acting and notes applications collect all types of data.
Maybe the content-specific approach is wrong. Maybe I just to need to write, organize and retrieve my data, whatever form it might take. Maybe using 'task' manager is not the right way, because I don't store 'tasks', really. I store data atoms (or datums).
Maybe I need a versatile type-agnostic PIM application in which I can throw anything and then just organize everything with metadata. But I haven't found the solution yet. DevonThink is interesting but it has virtually no mobile applications. Evernote, don't want to talk about it right now. Also I would probably loathe metatagging every piece of crap going in.