We just installed a Miele in our new house. We just couldn't go back to louder cheaper models after I installed one in our old house a few years ago. It hits 40 db while running at it's loudest peak. I am pretty sure they do not offer any in the $500 price range much like Bosch.

IMO, I would buy a Kenmore in the $500-600 range just because Sears backs the Kenmore name very well.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70