Like the designs for entry #4 and #6 and dark background in entry #4 gives a different appearance, classical yet with a modern twist. Entry #5 is more "fun" than formal.. like the colour options.
in reviewing the designs I like the uniqueness of using the 2 faces, however in an adapted form. One hasn't grabbed my attention but really like the direction of the classical masks (happy/sad) but in very unique, adapted and modern style....