I also was confused about this class. There was some really awesome driving horses in that class. I have never seen so much talent in the ring at one time. My problem is if the head set is subjective as you say , how do you know what is the proper way to set your horse up? At this show you could not use the previous class to determine what the judges were looking for. You had so many types that were placing high. The big black and white had a medium head set, short stride, and a low key trot without a lot of high stepping but with a little bouncing, not going very fast. The Silver Meadows horse had an extreme head set with chin against neck, short high stepping and tons of action, covering lots of ground fast. Twister had his normal average headset, looong sweeping steps, and also covering ground fast. The large bay had more of a park harness appearance, with extreme head set, extreme action , and lots of ground covered fast. All of the horses are so different, yet each placed first in different CP Classes under the same 3 judges. In one class the Silver Meadows horse placed first and the big black and white 2nd. This was from one extreme to the other being the top two horses. I would think that there would be some type of standard that they would judge by but it seemed to change with each class and each horse. I am not critizing any of these horses because they are all breathtaking. Just beautiful. I am just looking for a standard for that class. I also had the same issue with the Country Western Pleasure Classes. It just seemed that too many different types were placed in the top tens for there to be an accepted standard for that class. What am I missing?