I disagree intellidepth,Originally Posted by Intellidepth link=1221688489/0#0 date=1221688488
Assuming your cartridges are replaced regularly, the brita is more than adequate for home use as it filters and softens water. I replace mine every 80 litres. I believe that this is fine except in very hard water areas such as Adelaide.
This regime and a similar use profile led to no visible scale in my machine after 3 years.
Another excellent option for your style of machine is to purchase a resin cartridge water softener from Attilio (Cosmorex). These attach to the water inlet in your tank and can be replenished simply by soaking in a salt water every couple of weeks. They are inexpensive and will pay for themselves very rapidly.