i am new to leather working. what is the difference between veg tanned leather such as milled or the economy grade from tandy. as of right now i think i am going to get stuff from tandy but eventually switch to springfield. i am just making things for my self right now such as knife sheaths and i am praticing carving. i would just like to know what the best leather is from tandy for the money that is around 8/9 oz. thanks