Yeah the messy bowl, you could never fully clean underneath it, loading and unloading is pretty tedious though not as bad as a grasshopper, but the actual extraction is a tedious experience, first few hits are great, then it is just not enjoyable, so easy to get scorch spots while other spots are green, with the setting still below 300F (not to mention the design of the settings and the buttons and the mouthpiece) still not sure I would sell this one for the novelty of having it around, but I'm also not so sure I should bother keeping it as it's hardly useful at all