When I purchased this set, I somehow missed that each one had a different interior layout. While this was slightly annoying when I opened them and realized, I also admit that it was 100% my own fault.
It isn't even that big of a deal. I have plenty of friends in the planner community that use the ones I do not.
I do love the small, compact size. They would actually be perfect if they were offered as a four back with the same interior. This would provide those who only use certain interiors the ability to purchase only what they use. The books themselves are the perfect slize to be able to slide into your purse or briefcase to make sure you also ways have one easily available.