I've purchased the Sherlock pipe in the small and regular size a few times now, and will definitely continue. By far my favorite designed pipe. The built in ash catcher is something that is unusually difficult to find with other pipes, even from Grav Labs. In my opinion it's a feature that is under rated. The function on the Sherlock design is amazing and you never have to worry about ashes in your mouth. I'd love to see more pieces with the ash catcher.