I had originally purchased the Vaporbrothers CLEAR Precision Glass Hydrator™, it, but then I broke it, I felt pretty bummed and didn't wanna spend a bunch on another piece, so I decided to order this similar looking Vapor Glass Bubbler found on the Cheap, high-quality bubbler??? thread, with this bubbler posted by placetime. I had some leftover interchangable parts, I liked the VB Hydrator and this one was 1/3 the price. Yay. Side by side The $40 bubbler is a bit smaller. There is also a tiny bubble where the downstem meets the chamber. The glass feels a tiny bit thicker on the $40 bubbler, except at the very bottom where the Vaporbrothers is much thicker. The $40 bubbler also sounds distinctly different when tapped, kinda higher pitched, I'm guessing the sound of cheaper glass? Also surprisingly pipesdaddy sent a keck clip, . Vaporbrothers on left, pipesdaddy on right in all following images Shipping box Pipesdaddy impressed me here. It was filled with bubble wrap upon bubble wrap on every piece. It took me forever to unwrap and was sealed tightly with tape. 14mm Ground Glass Mouthpiece The $40 bubbler's piece was a bit longer, with a less polished ground glass connection. Felt gritty sliding it in and out. Glass Elbow adapter 18mm downstem fitting And lastly, the diffuser, mine turned out a little different than BigDaddyVapor's purchase VS the Vapor Brother's At first I was disappointed by this, but then after several uses found it to be a blessing. All in all I am happy with my purchase but can see the difference in quality, but functionally they work the same. Now I can look into buying some more glass and I won't feel as bad, he he.