I find the Australorp is a great breed. They lay good sized eggs almost every day, are relatively tolerant of other birds and interact well with people yet still have the survival instinct to run away from potential predators.
Occasionally will go broody but make good mothers. Definitely one to consider if you are rearing chicks without any artificial interference.
They are also a decent size bird for anyone looking for a utility bird that lays well and meaty carcass. Haven't taken this path yet with mine but I'm sure that if I do, the results would be promising.
Excellent foragers when out of the coop, mine even managed to find and unearth a rats nest and eat the pinkies
That being said, you want to keep them out of the garden, mum doesn't like it when her pretty plants get reduced to tattered stalks and neither do the neighbours.
All in all, an awesome breed that is both a great practical bird to keep for eggs, meat or a bit of both. They are great in a mixed flock and if treated nicely, can be a rewarding and fun pet.