I've decided to start putting all my juice into glass bottles. I can taste the "plastic" in older juice, especially in higher nic juice. I realize it's not scientific, but I'm guessing the nic is leaching the plastic, since I have some 0 nic doublers that I can't taste any difference in from new.I dont buy the year or even some companies post 2 year, to me if juice hits the 7-8 month mark it changes, it starts having a funky taste to it. yet some juices last longer then others Strpr, it all depends on the flavorings and ingredients used in it, but to me that 7-8 month mark is it for most, I like it fresh or steeped for a littlw while best. ! I'm sure some may disagree with this but us't just my personal opinion and how I roll, Fresh is best for me.!