Been viewing this site for quite a while but just getting around to membership. Thanks to great contributions over the years! I'm getting a bubbler/bong for my girlfriend. It has to be Polycarb/plastic, because of our clumsiness and that of our cat. I'm considering the Transformer tubes (and Steele) and the Jet Subzero mini. The previous device that she liked was one that I had made and dubbed The Dragon. It was two jars filled partway with water and with tubes going in and out (and sealed); essentially a double bubbler. I'm leaning toward the Jet Subzero with the extra percolating feature, but want to know if there are disadvantages. Does it introduce extra drag (harder to suck)? Does it take THC/TBD/Terpenes out of the smoke? Does ice cool better? I think my alternative would be the Steele with the fake-ice cubes (from them or just get some locally)? Any help?