Starting out with the 9013's, (over $600) did a different version of a 360 welt style, added leather mid soles, 3 ribbed shanks, Dr. Soles soles and matching heels, added a wider welt so we could do double stitch, it turned out very cool. The 8138's ($325) was a do over, customer was not happy with the repair so we made it right to make the customer happy. the 9011's ($345)got a basic make over, took out the fiberboard heel rand, fiberboard mid soles and replaced both with leather, then added the 3 ribbed shanks and vibram 700 soles and heels. the 4606's ($585) was brand new boots but the customer wanted to make it his own style so we helped him out. Changed the 270 welt to 360 storm welt, 3 ribbed shanks, leather mid soles, vibram ethon soles, leather heel bases and matching heels, Big improvement.