I don't own one personally, but a mate does and we've used it extensively in the past. It's quieter than your standard bong, and you can get larger hits because it's so smooth. We've found that a minifridge icecube tray makes perfectly sized icecubes for when you want to ice it. It works great with hot water hits, as well (most of my friends prefer this bong with microwaved water because it's so smooth).