Just from my experiences... YES, there is a difference in sheltie temperaments... I wanted a lay-back pup. That is what I got. Some people want a border quality type that is high energy for agility. If you want a show-quality pup you will be asked to show. Cost: $2.5k vs $4k and up. Also, consider if you have your heart set on a female they will most likely want you to breed her! Just some points to consider... I am sure others will chime in.