+1 on
@jyoutz's comments on Bosch. Ours is practically silent, and in 15 years, the only service was a pump replacement, which took longer to order than to replace. Ours seems to be basically self cleaning as far as the filters go. Every couple of years a pebble will get in, and drops safely to the bottom of the filters. The only reason that I notice is that the cycle time will jump up by five or ten minutes. We use Finnish packets, and Rinse-Aid, with no residue on either the glasses, cutlery, or dishwasher filters. We have had four in the extended family for 15-20 years and nobody has had to replace one. We would all replace any Bosch dishwasher that died with another Bosch in a heartbeat. Silent, and work great.
I have used Bosch stoves and ovens occasionally in other people's homes and liked them, but to me they certainly have a price premium.
So, are Bosch appliances better compared to Frigidaire / GE / Whirlpool? Without question. Are Bosch appliances perfect? Not in my experience, but they aren't shoddy or engineered for cost savings unlike many other brands. Is it worth the cost premium to you? That's not my call.
All the best,
Peter
P.S. our water is quite hard, and though softened still has a fair amount of dissolve solids. I think it is pretty amazing that the dishwasher isn't caked in deposits. YMMV.