Honestly I think the Treats dress is more unique (and I like it better, although I prefer complementary pastels to brighter colours). The colours of the Classic dress are more attention-grabbing, but honestly there's probably also going to be a lot of girls in bright colours, or Minnie Mouse/Princess dresses. The Treats dress is more subdued, but also I think a lot more memorable and something you're unlikely to find somewhere else, especially since it looks very one-of-a-kind, someone-talented-made-this.