Have to disagree with you on that. Nylon is a form of cloth, yes, but being man made it does not have the same wear issues as cotton or canvas. An original B-10 or N-1 will wear significantly quicker than a new repro because of the effects of age on the cloth and thread but nylon does not have these issues. It will fade a bit, yes, but the material itself will last many times longer. I've had nylon jackets from the 50's that were as strong as the day they were made, so if I were in the market for an N-2B I'd always look for an original if possible.as to vintage, and or used originals, they may have been made better, but being cloth, often as not, they come with the usual issues of cloth jacs. thus, my reasoning for landing a new one, er, i mean two.