I dont think they really have any established litters in the USA like they do in hungary or some other countries , though I am not a fan of some breeders in hungary either and dont agree with how they are breeding the breed . Others I really like . Personally , I like litters in which one of the parents has a B pedigree basically one of the parents is from unregistered dogs . My belgian breeder breeds both working and showlines . She is also not afraid to breed them together , and is working on getting the best of both worlds as well . Chooses unrelated lines for pairings . My dog I have is awesome , he has an offswitch , he is friendly , but he also has a lot of drive Though I did import my dog because I liked the breeder . I dont know too many showlines , but they have never stricken me as overly driven , or as driven as border collies , but then again I see fully trained ones , I dont get the full story .