This operation has been marketing themselves quite well over the last year, comendable. However, over last year and a half, I bought several different size ZAN slugs and on examination , found them a bit rough, not near as clean as , say , NSA or AVS slugs. Honestly, it appears ZAN follows the H&N formula for lead / antimony mix. You can see the generally darker grey that H&N products exibit. While NSA and AVS slugs appear much brighter and cleaner. Now grant you, AVS is currently pricier, but NSA is not. So, are folks going for the exotic?, slick marketing? Basically, how is ZAN different from NSA outside of formula mix?