so far i like this HMD. it seems to be well built and serves its purpose. for the price it would have been nice if the silicone rings where you adjust the height of the HMD was carbon fiber to match the other carbon stuff Steamulation sells, but silicone probably protects your fingers from the heat better than carbon would. some tips/instructions for best practice using it would be handy too. it just tells you the basics of raise it for less heat, lower for more heat.. so far it seems like 3 coals, start at lowest setting and let it sit on shisha for about 3-5min to heat/ignite shisha before smoking then raise to mid/top level to smoke. otherwise it gets quite hot. also, only fits smaller bowls. ordered several bowls it doesn't fit.. Oblako X Doosha, Oblako Phunnel M, nor the Japona Mummy work with it sadly. it does fit the Crystal Silicone bowl i purchased luckily, so i was able to use it still.