Yes, I agree Robert that all breeds are different and can be problematic in different ways. My Flat-Coat gets carried away and can be very boisterous and I wouldnt recommend a male Flat-Coat to people unless they were prepared to put in a lot of obedience work, exercise and wanted a dog that was there, ready for fun all the time.Know what you mean about terriers and yes its that sneaky/neurotic/sensitive side that would worry me about some collies as family pets, though I am sure that some are just lovely in that capacity. Its about the breed overall or the odds if you like of getting a collie that would fit the bill as a family dog.
Maybe also about your expectations of a family dog. Did your family keep the collie that bit you? I know that no dog can be trusted 100 per cent but in my opinion if a dog is sharing a family home with children you need to get as close to that as possible. I want a dog in my home that the children of course respect but a dog that they can touch when its eating,sleeping, whatever. Having said that, of course some collies will be like this and some individuals from other breeds known more to be pets will turn out to have less desirable temperaments. I suppose its about lessening the odds.