crsublette found a link to the Eco Blue Pumps.
I've been in touch with one of their distributors and got some performance data on three of their pumps, the Eco Blue 320, 500 and the 900.
At first glance they look pretty cool because they are variable speed pumps.
First concern though is that in the overall specs they are given a 90% or higher efficiency rating. Needless to say I find that hard to believe because efficiency varies depending on head, power draw and flow. Giving an overall figure doesn't make any sense. They could be referring to maximum efficiency but even if they are 90%+ is literally unbelievable and the data supplied tells a different story.
They have plotted the data in a rather unconventional manner so you have to get your head around the graphs
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From the data supplied the efficiency for all pumps at 0m head is almost always below 0.1% ie 1/10th of one percent at wattages above about 100W more like less than 0.05%.
From the data supplied the peak efficiency of the three pumps is:
Eco blue 320 31% efficency while drawing 220w at 2m head producing 12.5m3/hr
Eco Blue 500 44% efficiency while drawing 200W at 2m head producing 16m3/hr
Eco Blue 900 41% efficiency while drawing 600-900w at 5m head producing 18-27m3/hr
The result for the last pump is a bit concerning because it is unusual to have a pump capable of maintaing a constant efficiency rating over such a wide range of duties. Also bear in mind that we only have data on 3 head heights for each pump. There very well may be a higher efficiency achieved between head of 2m and 5m all of the pumps and possible higher efficiencies for the EB 900 at heads above 5m.
Even though these pumps do not have a higher efficiency rating than the Laguna's they could be a more efficient pump because they come with variable speed controllers. You would have the option of turning down the flow when your fish are small and turning it up as they grow. So even though mechanically they are not as efficient operationally they could be much more efficient.
Some of the controllers are programmable which would also be very useful.
The problem though is even if they perform as well as mostly described at about $900 a pop I don't see myself getting one.
Power company seems to think it's useful with Kilowatt hours and it might be helpful to figure how much the pump adds to your power bill 
. Just thinking that might be what they were trying to get at.
