Hi, I had been vaping Logic Power Menthol for years. They were available on EBAY and Amazon and I could get them cheap. They are no longer available. So I decided I would try and refill the logic cartridges. No matter what Menthol juice I tried, I could not get the same hit. So, I bought two smok pens and refilled them with four different juices, still not enough hit, if at all. Also, the SMOK pens battery life is a joke, good thing they charge up fast. I am looking for alternatives. I would only get a pen that is about as slim as a cigarette. Any advice? Thanks! Gary