This is a great washer. I don't know lots about washers. but it's easy to use, has great capacity, nice build quality (doesn't feel cheeszy, door isn't going to fall off).
Unfortunately, I didn't keep close tabs on my before and after power and water bills, but it appears to be working as described as an high efficiency washer. We are a family of 4 and our bills seem less. The biggest drawback is the price, but this unit is not only high effiency, but nicely built with cool LED buttons and a plethora of settings.