I also know about the "off button" on Mali's not working properly, but the dogs that I have known were soley used for security, man work and have never really been put in a social situation/life style. Obviously a running dogs constitution is very important and this is why I thought Malinois but as you said their temperament is not very stable and that is just no good for my situation, my dogs need to be able to be fussed/petted by strangers as part of their daily life.
Anyway the black dog looks real nice, what type of Belgian Shepherd was he? And what age did he make?