hi there,
a lot of work i get thru is from letting/sales agencies and the tenants etc leave them absolutely disgusting. i find steam works much better, uses less water and overall gives a better performance.
admitedly, my heater exchanger has been on the blink for ages (hench the reason for upgrading the machine) and i rely on the properties hot water tank being on. i can get the same result, but i find it a little more hard work.