This thread goes back to my main concern in vaping, and that is make sure you know what is in the juice you are vaping. I personally DIY, but if I do buy I make sure to buy from a vendor that is reputable. Most vendors I know personally and have ordered from online have a very good reputation and make their own juices. And trust me, they would never think to mix their lovely creations with a Chinese off the shelf mix. Also, make sure you aren't vaping some new juices coming out now that have oils in them. There seems to be an explosion starting up with B&M shops that sell herbal vaporizers and selling oil based juices and calling themselves Ecig shops, which to me they aren't. They need to put themselves in a corner with hookahs. They put up an Ecig sign and lure unsuspecting people in. It's quite disturbing to me. Got one right by my house that I visited.