I love Vocaloids! My number one favorite would have to be Luka. I adore Rin and Len as well as Lily too.

My favorite song would have to be either Romeo and Cinderella or Adolescence, both the Rin and Len versions.

Honestly, I'm not much of a fan of Miku at all >.>

I also really like the Duke of Verona. Such a catchy song XD