I prefer a pipe that passes a cleaner so that I do not have to break it down that often. I was very surprised that Ser Jacopo's full bents passed a cleaner easily so have been on the lookout for them specifically for that reason. I don't know about Peterson still on the fence they seem to have a tougher draw than my other pipes not really a complaint but I wonder if they are drilled smaller than others, like my Savinelli's seem to have a more open draw to each his own obviously but I prefer a more open draw. Anybody got the facts on this?