I've used Opus for years and love it, but unless I'm mistaken, it lacks a feature that at least one former competitor had: the ability to print directory trees, ideally to a specified depth.
Using the DOS tree command is not a substitute if some directories have complex nested directories. Screen shots from Opus are not a good substitute because one can only get one parent and one subordinate level at a time.
This would be valuable any time it's necessary to move files. I'm not organizing to move things from two old computers to one new one, and this would have been a substantial help.
