I had done lot of research for a month and ended up on Bosch WAK24168IN. This is an excellent machine and uses little detergent and water. Regarding the electricity I need to wait for my next bill.
It is very silent, solid and washes exceptionally well. You can blindly go for the Bosch.
The only thing you need check is regarding the water pressure in your house. It is mentioned in the manual that it needs a minimum 1bar pressure. Service guy told me that you can measure the flow using a water bottle as I am not sure how much pressure in my house.
If a 1ltr bottle fills up in 5-6 secs, then pressure is adequate.(As mentioned by Bosch technician) If you have any doubts you can catch up a technician/plumber.
All the best.