Jets and filter returns to stir up the water, in the direction of the filter, really help. Unimpeded 'flow through' circulation is ideal but good luck achieving it! The challenge is most us have all sorts obstructions in our ponds such as rocks, plants even the pump itself sitting on a brick etc. will interfere. I actually quoted myself (ha, sound like Austin Powers!) from a filtration feature I wrote earlier in the century. Whoa, I sound like an old guy. It is actually a very interesting topic. I investigated the topic when I was asked to compare pump performance and filtration. I am glad to see you are aware of the meaningless subjective claims such as 'Super high performance and maximum energy efficiency!" As compared to what? @addy1 hit the nail on the head. Looking just at wattage can be deceiving. Putting this in the automotive arena; one might look at the size and horsepower of a Corvette engine and think, "Whoa, I bet this thing sucks a ton of gas at high speed." But in reality, that massive engine is half stepping at highway speed and only sipping fuel.
