Continuing the theme of quality, here is a video on Horween Leather. Horween leather is made in the USA, and is one of the top producers of shell cordovan leather.
Shell Cordovan leather is known for its rich properties that allow it to go longer without polishing, as it already has more nourishment in the hide. This also allows the leather to fend off scruffs as demonstrated in this video. Although shell cordovan shoes are typically much more expensive than calfskin shoes, you will see how much goes into the making of these shoes and how little raw materials can be produced, it’s worth it.