I purchased 1 liter of 36mg 2 months ago from a different supplier. It was a 50/50 pg/vg, and it's not bad, but I would recommend a 100%pg/nic base, and dilute with more pg and some vg if you don't have a problem with pg. Even at 25% vg, some of my tanks can have a little issue wicking when I am vaping a lot. I went a bit overboard ordering supplies as I was a newbie to vaping in December, and now I have about 40 different flavorings, about 800ml base, and more pg and vg than I will need for the next year. I know that it needs to be stored in a cool and dark spot (closet drawer for me), but still should only be kept for about a year. So I would say don't over buy for now. Luckily about half a dozen of my friends and my fiance all vape, so I can get rid of stuff before it goes bad. I recommend TPA for flavorings, as Loran's isn't the greatest. Service is fast (Ca to NJ was 3 days) great pricing, and they even give you 1ml pipettes to save my syringes from constant cleaning. Also, get a nic testing kit, so you know that the base you get is actually what you ordered. Mine base came in at 31.4 mg/ml, when it was labeled as 36. Tested it three times just to make sure. Mine is safe as it is low, but I have heard of people getting 50+ on ECF when they ordered 24, which can be real bad. The $30 on the test kit is worth the safety, and possible cheaper than your co-pay to the hospital.