It's your choice really. They both get the job done. In my opinion, a 2" strop would force you to learn the downward angle as you pull the blade across the length, where as a 3" strop allows you to make complete blade contact while pulling the edge straight down the length. I for one, don't think it is completely necessary to angle as you go. Some maintain that it is good practice, but to each their own. Good luck!