I believe that the Zephyr Ion may be the most underrated, under marketed and best value in bag filling vaporizers currently in the market. After much research, testing and speaking with owners of both the Volcano & the Zephyr Ion, we have decided to go with the Zephyr Ion. Both are extremely reliable, well built and produce any quality /density of vapor that you desire, since they are both temperature adjustable. The Zephyr Ion came out on top due to the following : 1. Simplicity of use. Sets up quickly and easily. 2. Time to reach desired Temperature. 1 - 3 minutes. 3. Superior heating method. Blowing heated air into a sealed chamber keeps the material mixing during the entire vaping process. 4. Superior efficiency. You can use smaller amounts of material, therefore saving money which will help to offset the cost of the vaporizer. 5. Bang for your Buck. ($£¥€) The Zephyr Ion costs significantly less than the Volcano. Many of our patients are on Federal or State assistance and every penny, shilling, cent of income needs to be utilized the most frugal way possible. In summary, both products are good at what they do. The Zephyr Ion just does it better at a lower CPP, (Cost Per Puff) than the Volcano. Comments are welcome. Medical Cannabis NEMMPAG New England Medical Marijuana Patients Advocacy Group mod note: This was posted in the Zephyr thread and is therefore cross posting, which is against the rules.