First of all thank you for the forum. I appreciate all the info and experience you have all given by your posts. I've been smoking tobacco cigarettes since about 1991. After 18 years, I have (so far) quit with an e-cig. I finally made the jump to try out vaping when the cigarette place where I shop began selling an e-cig from a company called "pure smoke". Does anyone know about these cigs and how they rate against the others you've tried? I searched this site and was only able to find 2 video reviews which relate to this product. They were favorable, but apart from those reviews... nothing. I'd like someone to tell me what they think of this thing, and also (if you don't mind) help me to buy my next model. I know I'm going to need to trade up. I'll need a PV which can be refilled with liquid, produces lots of vapor (throat hit not important), and hopefully has a true passthru power source available (no batteries). This way I could ALWAYS be sure I'd have a vape when I need one. I'm thinking maybe 510, but all these numbers get so confusing... and they're not even the same manufacturer. I'm learning tho! Thank you in advance for any help... have a good one.