For Those Using IQ for Information Management (also any former Evernote users)
I love IQ for tasks management, but still use Evernote for information management. For two reasons - "tags" and "tag implementation", while not perfect it's a highly effective tagging system that is ridiculously easy to use, it allows grouping tags under categories and the hierarchy of tags are visible in the left navigation bar at all times (as I wish Grids were in IQ, but that's another story). Tags are one of those things that once you get used to using, you just don't want to go back. If I had never used them the standard method of using a strict classification system would probably be fine.