Juan TBH
I'll be 100% honest and say I was never all that fond of UTAUs because I could never find any quality voice banks, but then I stumbled upon Mike. First off, LIVING for the fact that Mike's forte are songs in Spanish. I don't hear enough originals in Spanish in the VOCALOID/UTAU fandom. Second, he's is unbelievably clear, and the capability, the power of his voice bank is truly shown off here. I thought "Me Rindo" was great, but this is incredible. TL;DR Mike is amazing and this goes off.
Favorite track: Puedo Respirar (Song) ft. Mike.