In many respects I am late to the party. The Diplomat Aero has been out for a good few years in an ever expanding number of colours and finishes. I have tried a few over time, but it was only on the last International Fountain Pen Day (2021) that I finally pulled the trigger and bought one. Was it worth it, am I glad, and is the cap snap action as sexy as many a reviewer has made it out to be.