Quick question: I have two devices, some extra coils and several juices. All the juices came from a subscription service. Some are just OK, some suck, and the only one I really like is almost gone. My biggest fear is running out of coils... but I also have never had a really good juice, so this is my question: get more coils or finally get a decent juice? I have enough coils and juice to last for weeks, so not an immediate issue, but have very little funds, so what would you choose in my situation?