I like the idea of cooling the smoke. The whole concept is great. The only con I have, and I guess it's more personal preference, is the down stem. It's not your fault. The industry changed the design over the years, I guess to allow less ashes in the beaker. It's been rounded in at the base or in the case of this down stem, just a few slots. The restriction at the bottom of the down stem also catches un burnt herb and tends to clog up fast. Personally I would rather clean my beaker more often than to clean out the down stem 10 times a night. Takes away from the experience. I'm old school. I'm ok with a good graphix bong. Ash catchers act the same for me, just another hindrance from the experience. So, in closing, personally I would change or offer a down stem that is completely open at the bottom.