I was extremely happy with my Herbalaire :thumbsup: , but, like all vaporizers, (Volcano, too), you can smoke the leftover 'duff', and still get high ... that makes it very obvious, that all the THC is NOT being released :wtf: ... the primary reason for a vaporizer, is to save your lungs from possible harm ... in fact, my doctor's recommendation specifically states my pot is to be "vaporized or ingested" ... regardless, I definitely prefer joints ... :smokin: