I am expecting my first child in a couple of months and have heard from some friends that I should get one of those very expensive steam vacuum cleaners to minimise the dust particles in the house and particularly if the child is allergic to dust (which I don't know yet). Can anyone advise whether it's a worthwhile investment (i have heard that these heavy duty steam vacuum cleaners cost around +$10K) or would a normal (non-steam) vacuum cleaner do? Many thanks in advance for any advice or comments you can give!