The Upline bubbler hits incredibly smooth and it looks beautiful. The description says that the mouthpiece and carb are ergonomically designed, I was skeptical about this but they really do fit well to my body. Despite its looks, it is surprisingly easy to clean. My only complaint is that the description and the picture on the web page indicate that the downstem is fixed to the bottom of the pipe to prevent damage, but on the piece I received it is not. I called GRAV and asked about this and they said that it is normal that it is not fixed and that this doesn't affect the performance. This is a little disappointing because the fixed downstem made the piece seem stronger, more solid. It was one of the factors that led me to choose the Upline bubbler. It is still a great product though.