I have the BC vaporizer. It's not too bad at all, takes a few to warmup and when you start toking, it really gets all the thc out of your bud. I mean it stretches it for a while! The hits are nice and clean, they feel nothing like smoke. More like flavored warm air. You may think you are getting nothing, but the high creeps up and is a super clean up high. I definately recommend them, but sometimes a pocket bowl is nice as well.