Please do not train your dogs with trainers. You should train your own dog. Only then it will be obedient to you.
It is very easy to train your own dog using the most scientific method, Marker/Clicker training. Please google "Marker training dogs or "Clicker Training dogs" and read up on it.
All my dogs are Obedience champions and I train them myself. You can see them at www.youtube.com/user/rrnsss