The Aquamax range of pumps is the best in all aspects. Yeah, they are more expensive, but they will save you money in the long to medium term.
OASE have spent literally millions of euros, making this pump the most energy efficient in it's class. Filter pumps have to run 24 hours a day, 365 days per year, so they can impact your energy bills significantly if you choose the wrong one!! An easy way to think of it is that every watt of power will cost you more than $2 per year.
If you purchased a cheap Chinese-made pump they will typically use around 320 - 600 watts of power, so you can see the Aquamax will actually pay itself off in not so long, especially considering that these units are built to last, unlike its poorer cousins...
These units are German made and show confidence in their product with a 5-year warranty.
3.7m head height