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The smoketip products are what got me to give up analogs, so I will be forever grateful.....I just would need like 5 starter kits with a power strip of chargers to use only their products. Plus the flavors I now like vaping are not theirs. But when I first started I was happy with their products...they are a great intro product, and you cannot go wrong with the lifetime warranty on the batteries, and they have free shipping too. But they don't sell liquid to refill the cartos, and I was using 5 of them a day which is rather expensive. I saved all the cartos though because common sense told me they had to be refillable, and cleanable, which of course they are. I am still using the cartos that originally came from them.....just not being filled with their flavors any longer.