Product review (5 stars): REALLY quiet dishwasher
My relatively new (11 months old) Bosch dishwasher is so quiet that we never know when it is running, unless we are standing right next to it.
Our household consists of just two people so it takes a few days for us to have a full dishwasher load; therefore, I am in the habit of rinsing my dishes well before putting them in  the dishwasher.  I have only used the long wash cycle once or twice in all the time I've had the machine.  The 30 minute short cycle is more than enough to get my dishes clean and I always use the Finish jet-dry rinse aid, because it makes the cycle 30 minutes instead of one hour.  The cost of buying the "Finish" is well off-set by the savings in electricity, etc.
I would highly recommend this dishwasher to anyone who's kitchen is part of a large gathering area like mine is.  When our family is at home I can run the dishwasher and we can all still talk and hear one another easily.  We couldn't do this with my old GE dishwasher.