I resisted buying the injector just to try it out, wasn't impressed by the Qaroma injectors. The B1 just continues to shine, at 590F, I preheat the bowl for 10-15 minutes, then load 3-4 scoops, put the heater on and wait about 30 seconds for the first pull, vapor is instantaneous and super dense, we are talking 1-2 second clean pulls that hardly tax your lungs. I normally get 4-5 high quality pulls per bowl. This is exactly what I want from a vaporizer, rich dense vapor in the shortest amount of time without any kind of respiratory discomfort.