I have a simple box vape, this model to be exact..http://www.vaporite.net/image/pro/twins_1.jpg this has worked great for me. I have used weed thats months old and its been fine, do you guys think its worth it to buy a expensive name brand OG Kush, La Confedential etc.. to vaporise with, or is the high of 20 a g chronic just as good?