Bosch
I would buy a Bosch again. I've been using one for five years, bought new when we moved, and have had no problems. Gets everything sparkly clean, and is very quiet. A big plus for me is the water heater under the tub. With no element inside the tub you can put plastics on the bottom rack. You can get the simpler models without all of the bells and whistles (which is what I have) for around $600.
I would buy a Bosch again. I've been using one for five years, bought new when we moved, and have had no problems. Gets everything sparkly clean, and is very quiet. A big plus for me is the water heater under the tub. With no element inside the tub you can put plastics on the bottom rack. You can get the simpler models without all of the bells and whistles (which is what I have) for around $600.