We bought the Bosch 300 series based on online reviews.  We've had it about a month, and find that it's VERY quiet, we like the top silverware rack, and the bottom dish rack has lots of capacity, but the middle (glasses) rack is smaller than the one on our previous Kitchen Aid, and is a drawback.  The Bosch also does not seem to dry as well as our previous KA. We hope it will be reliable for a long time of usage.