AP print is a self-retained version approved by the artist himself before the official release version. Because the quantity is less than the official version, the price may be higher. In addition, the quality of AP prints is usually better because they have been personally reviewed and adjusted by artists. Sometimes, the design or mounting of AP prints may be different from the official version, because it may contain the artist's own careful thinking.
100 printing refers to the officially released version, and the quantity is relatively large, so the price may be lower. Although the print quality of 100 is also good, it is usually not checked and adjusted by the artist himself like AP print.
To sum up, if you pursue rarity and uniqueness, and the budget is sufficient, then AP print may be a better choice. But if you are looking for cost performance or need to buy in large quantities, then 100 print may be more suitable for you. It should be noted that the specific choice of which version should also consider the value and influence of the artist and the work itself.