You are right about Miniature Schnauzers bein headstrong but not one of our five has been a "pain to train"!! They are really smart and love to please their owners. Maybe the ones you've encountered had owners who weren't willing to put in the time and effort it takes to teach a dog to obey. We train every day and one of the things our first trainer taught us was that you never stop training your dog - they love it - particularly the praise!!