I use Directory Opus extensively in my work as a professional photo and video organizer. I have developed the Megabyte Method and teach it to other pro photo organizers.
If you work with photos and videos, I hope you find this interesting. Please start with the article at: Photo Organizing Stuff - Meg's Bytes Blog
Then watch the video on my YouTube Channel.
There are other articles and videos featuring Directory Opus on my website and my YouTube channel.