Locally most folks have been using Great Pyrenees as LGD’s with a few using Anatolians or Commadores. Some of the seasoned goat / sheep producers have been switch over to Akbash or at least the version of it that exist in the US. Reasons I have heard have not been specific but many have been dissatisfied by the Great Pyrenees. From what I have seen the Akbash are more gracile and have coats that vary with season. They handle cold just fine like the Great Pyrenees but during summer months the coat thins out helping to control heat stress. The Akbash is also the most mobile of the standard LGD’s which is extremely important to me when poultry are the livestock of concern. None of these breeds or other similarly sized and proportioned breeds where developed for chickens so what it is best for sheep / goats does not mean much for deciding who is best for chickens. This is especially true when social groups for chickens behave very differently and predators targeting those groups have option to snatch and grab which predators of sheep / goats generally cannot do. Additionally, the predators poultry people deal with are smaller, faster, and less likely to stand and fight. This means outright size and fighting ability needs to be balanced with characteristics of dog that enable contending with smaller predators. From what I have seen, that means more speed. Great Pyrenees, Anitolians, and Commadores do not have the speed of the Ackbash. I have not seen the other LGD’s breeds in person, especially the higher dollar versions but they appear similar to slower LGD’s I am familiar with. This even ignores any health issues.