I have a
Technivorm and I love it. It has a 1400watt copper heater, but that means it brews in the proper length of time, about 6 minutes. The total kWh usage should be similar given that heating water takes a given amount of heat.
Note the total lack of a timer, or any other bells and whistles...
Just 198-204F water in ~6 minutes for full strength coffee with minimum bitterness... the best!