I said Snuzzle cause she was the only one I had as a kid, but I really didn't like her that much cuz she was grey and everyone else was a bright color. Her rival Peachy won more affection in my herd.
I cheated and voted for three: Cotton Candy, Bluebell, and Butterscotch. I love them all! But if I could only choose one, it would have been Cotton Candy.
I really love this set. However, I have to go with my two from childhood which are Blossom and Cotton Candy. Also, since I had Baby Cotton Candy as a child I choose her.