We had a Bosch dishwasher for nearly 20 years and loved it.  It was quiet, did really well on the dishes, etc.  It died in July of this year.  We knew we wanted another one.  We finally were able to purchase one in November and it was delivered, set up, etc. all with no problem.  The dishwasher is doing a great job -- our only small complaints are that it is noisier than our old one!  And the rack that holds the silverware if flimsy -- we would have kept the old one had we realized it was not quite as large or sturdy.  I just hope it holds up.  Maybe you can look into that aspect of your research.  Thanks.