DOT: Wow Philippines or Pilipinas kay Ganda

The Department of Tourism (DOT) is changing the catchphrase from “Wow Philippines” to “Pilipinas kay Ganda” but that’s temporary until the final and right catchphrase has been decided. It is one of the debatable issues right now as to why change it and why such a name. In your opinion what would it be: Wow Philippines, Pilipinas kay Ganda or other believable catchphrase?

Which is better, ‘Wow Philippines’ or ‘Pilipinas Kay Ganda’?