I just compared the Phantoms and the Anniversary meeples, and the Phantoms were slightly thicker. The difference is minimal, and when comparing just two, I couldn´t tell the difference. But when I put 6 in a row, the difference was visible to naked eye. I tried to take some photos, but you can´t capture what you see with your own eye... But alas, here´s some photos for your own evaluation. The Phantoms are multicoloured, and Anniversary the blues. (In my opinion, the difference might as well be caused by deviation in the manufacturing process.)