It is my experience that they are both good. I have an aussie that has a litter of pups ready to go right now, but that might not be my first choice. I think the border collie aussie mix is the best. The whole key to it is find working dogs not show dogs. Most people that have working dogs has one. I will not take a dog out unless I have 2 they will watch out for eachother and move anything better. One will hit the head the other the heals and spin a cow to the ground if shes rank. I can almost load the trailer with no panels in the field with 2 dogs and dog broke cows. The cows head strait for the pen as soon as they hear the dogs bark and the 4 wheeler fire up. They know it is easier to just go were the are suppose to. The cows being dog broke is something that most people forget about when trying to work cattle. They will square up and try to take a dog if they don't know what they are. So Thats my thoughts on it. They are a good tool but there are a lot of things to factor in when making that first purchase. Do you want gathering or driving dogs. border collie gathering, aussie driving. Make sure the parents work, That is the biggest part to stress. One check is when they are pups tie a string to a pop can and drag it behind you, The ones that will attack it and keep going after it for a period of time will be the better workers. See how timmid or bold they are. More passive dogs will give up and quit on you if they get kicked or tired. Then finally have it in the back of you mind it might take a couple of years for the cows and dogs to get trained, that until the cows are trained to keep a young pup away and not put them in a bad situation or they will quit working all together. But if done right it will be one of the best investments you ever made.
