I've listened to few Miku English songs trying to not look at the on-screen-lyrics and to understand her. Not a chance. Tried to make Miku English V4X to sing in my song, and I NEVER encountered a voice bank which gets worse and worse the more I try to edit and obtain a better pronunciation. It's a complete disaster!.... So.... back to my faithful GUMI: SURPRISE! Pronunciation SPOT-ON with only tweaks to fix the engine's faults. GUMI it is!