S.S.
I got the cheapest built in at Lowes - about $200. It doesn't rank high on the energy star card, but I haven't noticed any big jump in my electric bill going from no dishwasher to this one. It's reasonably quiet and takes everything my family dishes out (pun intended) with no problems.
I do three loads of dishes a day, including sippy cups and sippy bowls. My toddler has danced on the door, which still shuts, and there have been a couple of legos that got melted on the heating elements - it still works like it did 3 years ago.
S.