I know the Supreme is not the prettiest or most advanced looking vaporizer to the naked eye. You have to look past the simple parts (wood block & thermometer) The reason why used it as an example is its heat exchanger, look at the design, the air simply stays in it longer giving greater chance of being heated. In the Supreme's case, the air travels through many levels of heated metal which assures fully heated air by the time it exits and travels through to the herbs. There is more surface area, that is the key for thorough air heating. The Aromed also has a loose fitting bowl which means cool air can travel into the bowl while you are inhaling. This would make the temperature setting inaccurate, not to mention the Aromed's thermocouple is under the lighbulb (in the socket), I don't see how it can know the temperature of the herbs like they claim on the website. And I still hold my belief that it doesn't matter if the heat is coming from the top or the bottom because many good vaporizers have bowls or whips that you can remove so they wont overheat between hits anyways. I am raising valid points here, hard to deny. These are simple principles of heating.