Out of the ones I have I'd have to say it's a tie between the Disney Pierce and the Sanrio Pierce (Though I do reaaaalllyyyyy want the Yumemiru Ribbon!)
I guess I'm partial to change pierces lol. The Sanrio Pierce is just super cute all around. The Icon background is cute, all the transformations are sooooo well done, and what girly-girl doesn't love Hello Kitty! Though the Disney one also has a few pretty great transformations and I believe it's the only change pierce that includes a game which happens to be one that I really enjoy!
The Anniversary Pierce is also a pretty close runner-up because all the pixels are super well-done and I also love the concept behind the character designs! (Children in Japan entered drawings of character transformations into a contest and the top ten won by most votes)
(P.S. I just remembered there is also already a topic like this here lol)
Edited by Brittygotchi, 29 June 2014 - 07:16 PM.