Amazing how time can change the taste so much. I have this MBV black rock. Hated it at first, after a week or two it tasted amazing, sweet and tasty, now it is started to get a weird chemical like taste after a month or two. Was thinking the cotton I rewicked my protank made it weird so I replaced the head and its the same taste. On the other hand my cherry limade just keeps better better and better. anyone else experience this?