The Volcano is incredibly easy to use, even people with arthritis can use it, Its very efficient and also durable. It also has what i call the "honda civic" factor; its a very common model, so its easy to find parts for it, such as bags, screens, gaskets, and filters. It was designed to give you medicine, so the materials are all medicinal grade, and guaranteed not to leach any chemicals. The heating element does not heat the air stream directly, it heats an aluminum block, which acts as a thermal mass, distributing the heat evenly and at a constant temperature throughout the bag filling process. It uses a replaceable air filter for the incoming air. It does not use a fan for filling the bag as in most bag models, it uses a pump, which has a regulating device which allows an even stream of air, filling the bag driving the air across the herb more forcefully, and filling the bag quicker. The consistent air stream reduces the number of variables in the process, by removing variable air flow rates, (as in a whip style) adding to efficiency. The volcano bag has mouthpiece with a spring loaded valve so nothing is lost in the process, and you can pass the bag to a friend on another couch, or keep a circle going, without tethering a group down by an electrical chord.
and lastly, the reason why i love my volcano, when you have a volcano, people always wanna pack it!
Ease of use, efficiency, good design, good parts, durability, 3 year warranty, and many other reasons make the volcano the best. So to those who ask WHY IS THE VOLCANO THE BEST? now you know.