The world of cannabis smoking is going through a revolution. No longer does one have to find rolling papers, grinders, or clips. With the onset of vaping, cannabis is now available in waxes and oils that are easier to smoke without having to fill the room in a cloud of grooviness. The most important tool you need in the cloud-free experience of vaping is the perfect herb vaporizer pen. With so many on the market and so many different pens in high demand, here is a list of what to look for when you are choosing your next vape pen.  Charging Power Nothing is more dreadful and sad than reaching for…