BBS for me is no stuble in any direction, I shoot for this everytime I shave. Sometimes I ca get so smooth that you don't even see my shadow line. I never really have a skin irritation problem because if I truely get a BBS shave I don't have to shave until about 2.5 days later, which give my skin plenty of time to heal. If its a weekend I don't shave until Monday morning, since switching to a str8 I never shave the next day.