Yee my name is Derek and I work with UTAU and Vocaloid. My favorite UTAU is a tie between Ritsu and Hachi.
I own like 50 billion UTAUs. (Not really- Shiroku Musume, Kered, Puchi Musume, and Hachiyo.)
My favorite Vocaloid is a tie between SeeU, Ruby, Gumi, and Iroha. I also really like Nana...