Airedales will probably be fine with your own brood, but I was bitten by two Airedales as a young teenager, so it's a breed I particularly hate and wouldn't trust them with other people's children. Temperamentally, mongrels are your best bet. Labs are great but will be forever trying to snatch food! Dobermans are pussycats - they only kick in with their inbred instinct when a family member is directly threatened, but you do need to establish top dog status early on. Border Collies are neurotic - again probably fine with your own family but a bit unpredicatable and need tons of exercise. Of course, all the above is completely subjective, I'm sure others will have different experiences, eg, I instinctively avoid minature breeds, they always seem to be yapping and jumping up.