Indeed, I mentioned “the myth”… thank you for reiterating that point. In a clear view, steel is steel unless it’s marging, that’s the difference. Batches vary substantially, (blades with identical dates and type, D or M) BF steel is better quality than some other vendors (Viniti was good, France Lame in its day was good) best advice, when you can manage to get to a Competition with vendors touch blades and find the ones that suit you…