I just finished a pipeful of 1-Q in a newly acquired Mastro de Paja full bent smooth finish pipe. The unusual thing about this smoke was that it lasted 1 hour 10 minutes (I was working on the computer at the time and otherwise would not have noticed). My usual smoke is 45 minutes or so. I don't go for records. The usual part is that it was delightful! Now to think of it, I wonder how long I could have stretched it...