Really, there is no “best”, as the right leather depends totally upon your end goal. Popular moccasin leathers tend to be soft, pliable and strong. That’s why many people lean toward bison or soft veg tan. Personally, I like elk or buffalo, depending on the style, and in some cases, I’d even prefer an oil tanned cowhide. The best way to find what’s right for you is to settle on the look and feel you want for your moccs and do some research on different leathers. Some will offer more stretch than others, which some might be more abrasion resistant. Happy hunting.