If you want a small penknife with a few extra features, get the Executive. If you just want an excellent keyring sized knife, get a Manager or Rambler, and if you want more than a Rambler offers, skip the Minichamp and get the Pocket Tool Chest.
I really struggled to see where the 74mm range fitted for years. Too large for keys, too small for the pocket. Eventually, I figured out that a waistcoat pocket was where the 74 fits best, or as a desk knife.