Sorry if this has been posted elsewhere on the board but I'm wondering (I'm about ready to get started to go about placing my first order) should I go with glass or plastic? Obviously glass will last longer than plastic but I wonder about how long the cap/dropper portion will last? Can you buy just the cap/dropper by themselves? Are they difficult to clean? How long can I expect the plastic bottles to last in terms of refilling and/or switching juices (and having to clean them out when I'm switching juices)? Any advice in general in terms of what kind to buy, where and what sizes or assortment to buy? I'd prefer to buy the vg/pg, flavorings, nic, bottles ect in one place for this first go around. My assumption is I'll make batches in the size range of 15-20ml and hopefully I can find something I really like and then crank out 120ml batches. I'd sure like to hit on something good, save money, and help out another friend looking to save money on ejuice.