Interstellarum field edition was one of my first purchases when I got into visual observing a few years ago. I’ve never regretted it and it’s been imminently useful for the same reasons Keith mentions.
-b
I started a thread in "Book's" commenting on wanting to get a second copy Interstellarum Field so I can unbound the charts. Makes it easier at the eyepiece having a single page instead of the entire book. Looking inline this edition is going for $300 to $700!