I. Love. Gillio.
The company is located in Beersel, Belgium. They specialize in quality leather goods, but I am partial to their planners. Currently, I am using an A6 Compagna after using their Medium size for a few years. The A6 is a bit shorter, but wider than the Medium. And I like that since I take my planner in my purse everywhere I go. I feel the A6 size is less intrusive and also gives me a bit more space to write.
As you can see, I use a fountain pen in my planner. I love the Pilot Vanishing Point Decimo model. It's a nice size for my smaller hands and the extra fine nib works well with my Filofax planner pages. When I write in my calendar, it feels very satisfying. I like the feel of pen to paper.
Gillio is known for its beautiful leathers. The one above is a bi-color yellow and brown calf leather combination. The leather is incredibly soft and patinas quite well. I am partial to the layout of the Compagna. The large back pocket that spans the length of the planner is quite ingenious, and the high quality Krause rings are the icing on the cake.
This beauty is an A6 lava red shiny croco. I carried this in February and March. I purchased it as a Valentine's Day gift for myself. And it was well worth it. The planner is a bit more structured and less flexible than the calf leather versions, but it is a beautiful planner to hold.